2.6=-0.2r

Solution for 2.6=-0.2r equation:

Simplifying
2.6 = -0.2r

Solving
2.6 = -0.2r

Solving for variable 'r'.

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

Add '0.2r' to each side of the equation.
2.6 + 0.2r = -0.2r + 0.2r

Combine like terms: -0.2r + 0.2r = 0.0
2.6 + 0.2r = 0.0

Add '-2.6' to each side of the equation.
2.6 + -2.6 + 0.2r = 0.0 + -2.6

Combine like terms: 2.6 + -2.6 = 0.0
0.0 + 0.2r = 0.0 + -2.6
0.2r = 0.0 + -2.6

Combine like terms: 0.0 + -2.6 = -2.6
0.2r = -2.6

Divide each side by '0.2'.
r = -13

Simplifying
r = -13