86=7b+30

Solution for 86=7b+30 equation:

Simplifying
86 = 7b + 30

Reorder the terms:
86 = 30 + 7b

Solving
86 = 30 + 7b

Solving for variable 'b'.

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

Add '-7b' to each side of the equation.
86 + -7b = 30 + 7b + -7b

Combine like terms: 7b + -7b = 0
86 + -7b = 30 + 0
86 + -7b = 30

Add '-86' to each side of the equation.
86 + -86 + -7b = 30 + -86

Combine like terms: 86 + -86 = 0
0 + -7b = 30 + -86
-7b = 30 + -86

Combine like terms: 30 + -86 = -56
-7b = -56

Divide each side by '-7'.
b = 8

Simplifying
b = 8