105=7r

Solution for 105=7r equation:

Simplifying
105 = 7r

Solving
105 = 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.
105 + -7r = 7r + -7r

Combine like terms: 7r + -7r = 0
105 + -7r = 0

Add '-105' to each side of the equation.
105 + -105 + -7r = 0 + -105

Combine like terms: 105 + -105 = 0
0 + -7r = 0 + -105
-7r = 0 + -105

Combine like terms: 0 + -105 = -105
-7r = -105

Divide each side by '-7'.
r = 15

Simplifying
r = 15