-7(1-6b)+4=81

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Solution for -7(1-6b)+4=81 equation:


Simplifying
-7(1 + -6b) + 4 = 81
(1 * -7 + -6b * -7) + 4 = 81
(-7 + 42b) + 4 = 81

Reorder the terms:
-7 + 4 + 42b = 81

Combine like terms: -7 + 4 = -3
-3 + 42b = 81

Solving
-3 + 42b = 81

Solving for variable 'b'.

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

Add '3' to each side of the equation.
-3 + 3 + 42b = 81 + 3

Combine like terms: -3 + 3 = 0
0 + 42b = 81 + 3
42b = 81 + 3

Combine like terms: 81 + 3 = 84
42b = 84

Divide each side by '42'.
b = 2

Simplifying
b = 2

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