Question

simplify the expression -3(b-7)

Answer 1

Distribute each term:
\[\LARGE -3(b-7)=-3(b)-3(-7)=?\]

Answer 2

do you understand Luigi's explanation ? Are you still having trouble ?

Answer 3

whats -3 * b ?

Answer 4

b - 10?

Answer 5

no...
-3 * b = -3b
Now whats -3 * -7 ?
Do not add, you are multiplying. Remember, when multiplying by two negatives, it changes to a positive.
So what is -3 * -7 ?

Answer 6

right 21

Answer 7

so now we have : -3b + 21
understand ?

Answer 8

thanks yes

Answer 9

just multiply the number outside of the parenthesis with everything inside the parenthesis.

Answer 10

doing this will get rid of the parenthesis

Answer 11

you got anymore ?