Question

- 1/5 = r - 1/5; 0

Answer 1

-1/5 = r - 1/5

-1/5 + 1/5 = r -1/5 + 1/5
0 = r + 0
r = 0.

Answer 2

why am I not getting this?

Answer 3

The trick is to do the same arithmetic operations to both sides. Until you have the variable on one side, and a value on the other.

Answer 4

will you help me with a couple more?

Answer 5

Yes.

Answer 6

39 = -7p - 4; 5?

Answer 7

39 + 4 = -7p - 4 + 4
43 = - 7p
p = -43/7