-3+2r+7r+4+8r=

Solution for -3+2r+7r+4+8r= equation:

Simplifying
-3 + 2r + 7r + 4 + 8r = 0

Reorder the terms:
-3 + 4 + 2r + 7r + 8r = 0

Combine like terms: -3 + 4 = 1
1 + 2r + 7r + 8r = 0

Combine like terms: 2r + 7r = 9r
1 + 9r + 8r = 0

Combine like terms: 9r + 8r = 17r
1 + 17r = 0

Solving
1 + 17r = 0

Solving for variable 'r'.

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

Add '-1' to each side of the equation.
1 + -1 + 17r = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 17r = 0 + -1
17r = 0 + -1

Combine like terms: 0 + -1 = -1
17r = -1

Divide each side by '17'.
r = -0.05882352941

Simplifying
r = -0.05882352941