Question

[7(b+5)-15]+[2(b-2)+1]

Answer 1

any responses coming to mind

Answer 2

30?

Answer 3

Why on Earth would it be 30? Where did the 'b' go? Please show your work.

Answer 4

\[ \large [7(b+5)-15]+[2(b-2)+1]\] first distribute into the parentheses: \[\large [7b+7*5-15]+[2b-2*2+1]\]

Answer 5

[7b+20]+[2b-5]?

Answer 6

first set of square brackets is right, the [7b+20] but you may want to check the second... \[\large [7b+20] + [2b - 4 +1]\]

Answer 7

[7b+20]+[2b-3]

Answer 8

Correct! Now you can drop the square brackets and combine like terms.

Answer 9

9b+17

Answer 10

Yep :)

Answer 11

but wait do i do another step

Answer 12

like trying to get b by itself

Answer 13

no, 9b + 17 is as simplified as you can get.

Unless it's something like 9b+17 = 0, then you can find b.

Answer 14

oh ok well no thx