If 7 (x - 2) = x + 16, then x = 5.

Step-by-step explanation:

so if x=5 then plug in 5 where you see x  for example 7(5-2)=(5)+16

just replace x with 5 and you should get the right answer

Step-by-step explanation:

Solve brackets, 5-2 = 3 , 7 times 3 = 21

Then 5 plus 16 = 21

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!