4(1-4b)=84

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Solution for 4(1-4b)=84 equation: 


Simplifying
4(1 + -4b) = 84
(1 * 4 + -4b * 4) = 84
(4 + -16b) = 84

Solving
4 + -16b = 84

Solving for variable 'b'.

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

Add '-4' to each side of the equation.
4 + -4 + -16b = 84 + -4

Combine like terms: 4 + -4 = 0
0 + -16b = 84 + -4
-16b = 84 + -4

Combine like terms: 84 + -4 = 80
-16b = 80

Divide each side by '-16'.
b = -5

Simplifying
b = -5

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