Question

Help please!!!



Simplify the following expression

x-4y+5z-3x-y+2z

a. -2x-5y-7z
b.-2x-5y+7z
c.-2z+5y-3z

Answer 1

group all the x ,y and z terms .

Answer 2

(x-3x) + (-4y-y) + (5z+2z)

Answer 3

x(1-3)+y(-4-1)+z(5+2)

Answer 4

is it clear ? @Coralgirl

Answer 5

not quite but I am trying to understand it

Answer 6

\(x-4y+5z-3x-y+2z=-2x-5y+7z\)

Answer 7

\(x\)=apple
apple-3apple=-2apple

Answer 8

y=orange
-4orange-orange=-5orange

Answer 9

z=banana
5banana+2banana=7banana

Answer 10

okay how to do you arrange it @AntarAzri ?

Answer 11

how to do you rearranged them to solve ?

Answer 12

-2apple-5orange+7banana
and apple x, orange y, banana z

Answer 13

What do you mean by arranging ?

Answer 14

is it like -y-4y +5z+2z+3x-x

Answer 15

Not like but it is

Answer 16

btw, you must begin by apple, orange, then banana

Answer 17

Okay ?

Answer 18

-4y-y-3x-x+5z+2z?

Answer 19

Well, you want one x one y and one z, right ?

Answer 20

yes

Answer 21

then, do the sum of your \(x\)s \(y\)s and \(z\)s

Answer 22

x-3x = -2x

Answer 23

Awsome

Answer 24

What about y

Answer 25

Come on do the sum

Answer 26

-4y-y ?

Answer 27

5y

Answer 28

it's kinda \(y(-4-1)=?\)

Answer 29

How much is \(-4-1=?\)

Answer 30

last one is 7z

Answer 31

Nope, you must get y first

Answer 32

3

Answer 33

sorry i mean \(4+1\) ?

Answer 34

5

Answer 35

that's right, \(-4y-y=-y(4+1)\) and that equal to what ?

Answer 36

0kay

Answer 37

Equal to what ?

Answer 38

5y

Answer 39

\((4+1)\) times \(-y\) ?

Answer 40

\(4+1\) is \(5\) and \(-y\) that give us \(-5y\), right ?

Answer 41

yes sorry

Answer 42

Did you studied the negative numbers ?

Answer 43

yes

Answer 44

I am not getting this picture quite well. its kind of messy

Answer 45

You come down \(4\) times from \(0\) which \(-4y\) and you come down again one more time which is \(-(1)y\) and you will be in the -5 degree, right

Answer 46

Yup it's messy sorry

Answer 47

yes, course

Answer 48

no problem at all, I got it

Answer 49

Think of it that way

Answer 50

Well, what if you come down 6 times and than 7 times where you will be ?

Answer 51

-6, -7

Answer 52

Yup the sum I mean ?

Answer 53

Consider your self siting in \(0\) than you come down 6 times than 7 times again where you will be ?

Answer 54

I mean you are siting on line :D

Answer 55

-2

Answer 56

-5

Answer 57

(SITTING)

Answer 58

Nope

Answer 59

-1

Answer 60

-2

Answer 61

-3

Answer 62

-4

Answer 63

-5

Answer 64

-6

Answer 65

-7

Answer 66

Right you are in the (-7)

Answer 67

7

Answer 68

Sorry, I'm wrong, could you start from -6 and you come down 7 times ?

Answer 69

Where you will be ?

Answer 70

-7

Answer 71

sorry -12

Answer 72

Wrong, let me explain again

Answer 73

sorry for trouble :(

Answer 74

Are you sure -12 ?

Answer 75

no i am not sure

Answer 76

Isn't -13 ?

Answer 77

Oh yea, i made mistake on counting