What makes the open sentence 7x - 7 = 2x + 8 true a. x = 0 b. x = 1 c. x = 3 d. x = 4

If we plug x = 3 into the equation we have

7(3) - 7 = 14

and

2(3) + 8 = 14

So the answer is C

7x - 7 = 2x + 8

7x - 2x = 8 + 7

5x = 15

 x = 3

Answer

C. X = 3

3; 9 is 8 to -4

step-by-step explanation:

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are