6+2b-12+5b=-15

Solution for 6+2b-12+5b=-15 equation:

Simplifying
6 + 2b + -12 + 5b = -15

Reorder the terms:
6 + -12 + 2b + 5b = -15

Combine like terms: 6 + -12 = -6
-6 + 2b + 5b = -15

Combine like terms: 2b + 5b = 7b
-6 + 7b = -15

Solving
-6 + 7b = -15

Solving for variable 'b'.

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

Add '6' to each side of the equation.
-6 + 6 + 7b = -15 + 6

Combine like terms: -6 + 6 = 0
0 + 7b = -15 + 6
7b = -15 + 6

Combine like terms: -15 + 6 = -9
7b = -9

Divide each side by '7'.
b = -1.285714286

Simplifying
b = -1.285714286