81=7+b

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Solution for 81=7+b equation:


Simplifying
81 = 7 + b

Solving
81 = 7 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
81 + -1b = 7 + b + -1b

Combine like terms: b + -1b = 0
81 + -1b = 7 + 0
81 + -1b = 7

Add '-81' to each side of the equation.
81 + -81 + -1b = 7 + -81

Combine like terms: 81 + -81 = 0
0 + -1b = 7 + -81
-1b = 7 + -81

Combine like terms: 7 + -81 = -74
-1b = -74

Divide each side by '-1'.
b = 74

Simplifying
b = 74

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