r+8.6+0.4r=-8.6

Solution for r+8.6+0.4r=-8.6 equation:

Simplifying
r + 8.6 + 0.4r = -8.6

Reorder the terms:
8.6 + r + 0.4r = -8.6

Combine like terms: r + 0.4r = 1.4r
8.6 + 1.4r = -8.6

Solving
8.6 + 1.4r = -8.6

Solving for variable 'r'.

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

Add '-8.6' to each side of the equation.
8.6 + -8.6 + 1.4r = -8.6 + -8.6

Combine like terms: 8.6 + -8.6 = 0.0
0.0 + 1.4r = -8.6 + -8.6
1.4r = -8.6 + -8.6

Combine like terms: -8.6 + -8.6 = -17.2
1.4r = -17.2

Divide each side by '1.4'.
r = -12.28571429

Simplifying
r = -12.28571429