4(2-7b)=-20

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Solution for 4(2-7b)=-20 equation: 


Simplifying
4(2 + -7b) = -20
(2 * 4 + -7b * 4) = -20
(8 + -28b) = -20

Solving
8 + -28b = -20

Solving for variable 'b'.

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

Add '-8' to each side of the equation.
8 + -8 + -28b = -20 + -8

Combine like terms: 8 + -8 = 0
0 + -28b = -20 + -8
-28b = -20 + -8

Combine like terms: -20 + -8 = -28
-28b = -28

Divide each side by '-28'.
b = 1

Simplifying
b = 1

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