-5b-(1+5b)=-81

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Solution for -5b-(1+5b)=-81 equation:


Simplifying
-5b + -1(1 + 5b) = -81
-5b + (1 * -1 + 5b * -1) = -81
-5b + (-1 + -5b) = -81

Reorder the terms:
-1 + -5b + -5b = -81

Combine like terms: -5b + -5b = -10b
-1 + -10b = -81

Solving
-1 + -10b = -81

Solving for variable 'b'.

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

Add '1' to each side of the equation.
-1 + 1 + -10b = -81 + 1

Combine like terms: -1 + 1 = 0
0 + -10b = -81 + 1
-10b = -81 + 1

Combine like terms: -81 + 1 = -80
-10b = -80

Divide each side by '-10'.
b = 8

Simplifying
b = 8

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