-42=-6r

Solution for -42=-6r equation:

Simplifying
-42 = -6r

Solving
-42 = -6r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '6r' to each side of the equation.
-42 + 6r = -6r + 6r

Combine like terms: -6r + 6r = 0
-42 + 6r = 0

Add '42' to each side of the equation.
-42 + 42 + 6r = 0 + 42

Combine like terms: -42 + 42 = 0
0 + 6r = 0 + 42
6r = 0 + 42

Combine like terms: 0 + 42 = 42
6r = 42

Divide each side by '6'.
r = 7

Simplifying
r = 7