Question

9x-4x show your work

Answer 1

What are you trying to do?

Answer 2

simplifying Expressions

Answer 3

Combine the like terms.
\[9x-4x\]\[(9-4)x\] You can then do the subtraction in the brackets. Leaving you with a simplified expression.

Answer 4

i dont know maths not my thing

Answer 5

9x-4x
combined becomes
(9-4)x
after subtraction you get
5x.
5x is the simplified expression of 9x-4x

Answer 6

oh so all you do is subtract

Answer 7

what about this 2z+5+3z

Answer 8

Again, Combine the like terms first. so (2z+3z)+5
add those z terms together. what have you got?

Answer 9

5z

Answer 10

or z10

Answer 11

5z+5
because the 5 is on it's own. it doesn't have the z term associated with it.

Answer 12

so it would be 5z right

Answer 13

yes the 2z+3z would be 5z.
but in the original question you have 2z+3z+5. only the 2z and 3z get combined. leaving you with the simplified equation of 5z + 5

Answer 14

6f+3+4f+5+10f i dont get it at all

Answer 15

Combine all the terms with f in it. and all those without an f. What have you got?

Answer 16

u get 20f

Answer 17

yes, and?

Answer 18

8

Answer 19

good. Now put them together in a single equation and you've got: 20f+8

Answer 20

28f or is it just 20f+8

Answer 21

just 20f+8. because the 8 is NOT associated with f

Answer 22

ooo

Answer 23

ok with this one -9g+8g do u get 1g

Answer 24

not quite. it's -1g

Answer 25

oh

Answer 26

Do you understand why?

Answer 27

no

Answer 28

im trying to get it im no good at this math

Answer 29

Well like I said earlier.
You combine the terms into one expression. -9g+8g becomes (-9+8)g
Calculate -9+8. which equals -1.
So the expression becomes -1g.

Answer 30

ok no i got it

Answer 31

now

Answer 32

4x+5y-y+3x

Answer 33

still don't no this one

Answer 34

what do i do with the y

Answer 35

Combine Like Terms.
(4x+3x)+(5y-y)
(4+3)x+(5-1)y
7x+4y

Answer 36

dont get it

Answer 37

You're adding the terms together...
All the x terms with all the x terms. Then all the y terms with all the y terms.
Basically just rearrange the equation so you have all the SAME terms together. then simplify them like I explained earlier.

Answer 38

so 4x+3x=7x then what do i do with 5y-y

Answer 39

you treat the lone y as 1y. giving you the same expression. 5y-1y. simplify that.

Answer 40

so its 4y

Answer 41

correct.