Question

-3(2x - 5) - 4(x + 7) simplify.

Answer 1

@amistre64 do i do the same thing as my previous problem?

Answer 2

Distribute the numbers and combine like terms

Answer 3

yes, but this time you have something other than a 1 to distribute

Answer 4

distribution is just a way of speeding up addition ... its multiplication.

4(a+b) = (a+b) + (a+b) + (a+b) + (a+b)
= a+b+a+b+a+b+a+b
= a+a+a+a + b+b+b+b
= 4a + 4b

Answer 5

oh i see. so i multiply everything in the parentheses by the number outside and before it?

Answer 6

thats a quick version yes :)

Answer 7

-6x+15
-4x-28

Answer 8

then i subtract it like the other problem right?

Answer 9

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


-6x + 15
-4x - 28

yep thats perfect, now combine like terms

Answer 10

-10x-13

Answer 11

i like it

Answer 12

Great! thanks for your help again! :)

Answer 13

youre welcome .. your doing great :)

Answer 14

-10x-13