Question

math question will give medal

Answer 1

expand the expression and combine the like terms:

7(-3+5p)+3(-2p-7)

Answer 2

expanding the first set of parentheses

\[7(-3+5p)\quad=\quad7\times-3\quad+\quad7\times 5p\]

Answer 3

-21 and 35p

Answer 4

good , now the second set

3(-2p-7) = 3 x -2p + 3 x -7
=

Answer 5

-6p and -21

Answer 6

great!

so you have expanded the expression

7(-3+5p) + 3(-2p-7)
into
= -21 + 35p + -6p + -21
= -21 + 35p -6p -21

now combine the like terms

Answer 7

i forget how combine like terms...

Answer 8

the terms with one p can be added together, and the constant numbers can add together

= -21 + 35p -6p -21
= (35-6)p + (-21-21)
=

Answer 9

29 and -42

Answer 10

is the asnwer 27p-49?

Answer 11

so we write

= -21 + 35p -6p -21
= (35-6)p + (-21-21)
= 29p + -42
= 29p - 42
final answer

(you don't have to write the middle two steps above, if you can do these in your head )

Answer 12

oh okay. i get it i think. can we do another problem?

Answer 13

ok

Answer 14

-1+2(2t+4)

Answer 15

-1+2
2t+4

Answer 16

so just multiply the 2 in-font of the parenthesis with the terms inside it

i can check your working

Answer 17

, o , is that a fraction?

Answer 18

no.
i gave you wrong question lol
-3(-1-t)+2(2t+4)

Answer 19

oh, ok.
well just multiply through the brackets like before

Answer 20

show me what you get after this step

Answer 21

-3x-1 am i doing it right so far

Answer 22

go on

Answer 23

-t x 2t

Answer 24

2x4

Answer 25

try to perform working in lines

-3( -1 -t) + 2( 2t +4)
= -3 x -1 + -3 x -t + 2 x 2t + 2 x 4
=

Answer 26

3 + 1t + 8

Answer 27

what you mean?

Answer 28

oh wait,

-3 x -t = 3t,

Answer 29

im confused lol

Answer 30

a negative times a negative equals a positive

Answer 31

so the answer is -3x-t=3t?

Answer 32

no, i mean that

= -3 x -1 + -3 x -t + 2 x 2t + 2 x 4
= 3 + 3t + 4t +8

Answer 33

18?

Answer 34

you can't add terms with a variable ( t in this case) to constants

Answer 35

so 7t +11

Answer 36

that's better

Answer 37

is that the final answer?

Answer 38

yes, if the question was simplify by expand and combine the like terms

Answer 39

2(-t-4) - (-2+4t)

2x-t -4 - -2 +4t

Answer 40

i did it wrong..

2(-4-t)-(4t-2)

Answer 41

2x-4 -t x - 4t - 2

Answer 42

almost

2(-4 -t) - (4t -2)

2x-4 + 2x-t + -1x4t + -1x- 2

Answer 43

(the negative sign is really a -1 )

Answer 44

-8 + 2x-t + -4t + 2

Answer 45

that is right keep going

Answer 46

wait... how do you do 2x-t + -4t? and -8+2?

Answer 47

simplify 2 x -t first

Answer 48

wait how would i do that?

Answer 49

2 x -t = 2 x -1 x t =

Answer 50

what is 2 times -1 ?

Answer 51

-1

Answer 52

-2*

Answer 53

so 2 x -t = 2 x -1 x t = -2 x t = -2t

Answer 54

right?

Answer 55

yes

Answer 56

so you have

..
= -8 + 2x-t + -4t + 2

= -8 -2t -4t + 2

combine the like terms

Answer 57

-6 + -6t

Answer 58

good stuff

Answer 59

-6-(-8z+10)

Answer 60

-6 x -1 -8z +10

Answer 61

6 + 2t

Answer 62

2z**

Answer 63

careful

-6 - (-8z+10)
= -6 - 1x(-8z +10)
=

Answer 64

6+ 2z

Answer 65

-6 - (-8z+10)
= -6 - 1x(-8z +10)
= - 6 -1x-8z -1x10
=

Answer 66

6 + 8z + -10

Answer 67

how did -6 turn into 6?

Answer 68

srry that was suppose be a -6

Answer 69

ok

Answer 70

-16 + 8z (final answer?

Answer 71

yep

Answer 72

5(-4-2q) + 3 (q+7)

5 x -4 -2q+ 3 3 x q q+7

Answer 73

not quite, you have to multiply the term outside the brackets, by Both terms inside the brackets

Answer 74

ax(b+c) = axb + axc

Answer 75

try the expansion of the first bracket again

5(-4-2q) =

Answer 76

so 5 x -4 and 5 x -2q??

Answer 77

that's better, now try the second bracket expansing again

Answer 78

3 x q and 3 x 7

Answer 79

yeah so

now what do you get for

5(-4-2q) + 3 (q+7)
=

Answer 80

-30q + 10

Answer 81

+10q

Answer 82

5(-4-2q) + 3 (q+7)
= 5 x -4 and 5 x -2q + 3 x q and 3 x 7
= 5 x -4 + 5 x -2q + 3 x q + 3 x 7
=

Answer 83

-20 + -10q + 21q

Answer 84

= 5 x -4 + 5 x -2q + 3 x q + 3 x 7
= -20 + -10q + 3 x q + 3 x 7

Answer 85

-30q + 3xq + -21

Answer 86

nope, do the multiplication first

Answer 87

-21q + 30q

Answer 88

?

Answer 89

im confused/

Answer 90

5(-4 -2q) + 3 (q + 7)
expanding the brackets
= 5 x -4 + 5 x -2q + 3 x q + 3 x 7
carrying out the multiplication
= -20 + -10q + ... + ...
combine the like terms
=
simplify
=

Answer 91

3 x q + 3 x 7

Answer 92

you can simply these multiplications, right?

Answer 93

yes?

Answer 94

3 x q is the same as 3q right?

Answer 95

yes

Answer 96

3 times 7 is . . .

Answer 97

21

Answer 98

= 5 x -4 + 5 x -2q + 3 x q + 3 x 7
carrying out the multiplication
= -20 + -10q + 3q + 21
combine the like terms
=