# Reasons in Proof

posted by
**Alex** on
.

*I KNow only #6 which is relfexive,I think...You have to find the reasons for this...*

1. 3x - 7 = -4

2. 3x - 7 + 7 = -4 + 7

3. 3x + 0 = -4 + 7

4. 3x + 0 = 3

5. 3x = 3

6. (1/3) 3x = 3 (1/3)

7. (1/3) 3x = 1

8. 1x = 1

9. x = 1