42=7r

Solution for 42=7r equation:

Simplifying
42 = 7r

Solving
42 = 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
42 + -7r = 7r + -7r

Combine like terms: 7r + -7r = 0
42 + -7r = 0

Add '-42' to each side of the equation.
42 + -42 + -7r = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -7r = 0 + -42
-7r = 0 + -42

Combine like terms: 0 + -42 = -42
-7r = -42

Divide each side by '-7'.
r = 6

Simplifying
r = 6