3b-5-7b-8=

Solution for 3b-5-7b-8= equation:

Simplifying
3b + -5 + -7b + -8 = 0

Reorder the terms:
-5 + -8 + 3b + -7b = 0

Combine like terms: -5 + -8 = -13
-13 + 3b + -7b = 0

Combine like terms: 3b + -7b = -4b
-13 + -4b = 0

Solving
-13 + -4b = 0

Solving for variable 'b'.

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

Add '13' to each side of the equation.
-13 + 13 + -4b = 0 + 13

Combine like terms: -13 + 13 = 0
0 + -4b = 0 + 13
-4b = 0 + 13

Combine like terms: 0 + 13 = 13
-4b = 13

Divide each side by '-4'.
b = -3.25

Simplifying
b = -3.25