12.6=-2r

Solution for 12.6=-2r equation:

Simplifying
12.6 = -2r

Solving
12.6 = -2r

Solving for variable 'r'.

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

Add '2r' to each side of the equation.
12.6 + 2r = -2r + 2r

Combine like terms: -2r + 2r = 0
12.6 + 2r = 0

Add '-12.6' to each side of the equation.
12.6 + -12.6 + 2r = 0 + -12.6

Combine like terms: 12.6 + -12.6 = 0.0
0.0 + 2r = 0 + -12.6
2r = 0 + -12.6

Combine like terms: 0 + -12.6 = -12.6
2r = -12.6

Divide each side by '2'.
r = -6.3

Simplifying
r = -6.3