78=-6r

Solution for 78=-6r equation:

Simplifying
78 = -6r

Solving
78 = -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.
78 + 6r = -6r + 6r

Combine like terms: -6r + 6r = 0
78 + 6r = 0

Add '-78' to each side of the equation.
78 + -78 + 6r = 0 + -78

Combine like terms: 78 + -78 = 0
0 + 6r = 0 + -78
6r = 0 + -78

Combine like terms: 0 + -78 = -78
6r = -78

Divide each side by '6'.
r = -13

Simplifying
r = -13