-120=4(5+5b)

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Solution for -120=4(5+5b) equation:


Simplifying
-120 = 4(5 + 5b)
-120 = (5 * 4 + 5b * 4)
-120 = (20 + 20b)

Solving
-120 = 20 + 20b

Solving for variable 'b'.

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

Add '-20b' to each side of the equation.
-120 + -20b = 20 + 20b + -20b

Combine like terms: 20b + -20b = 0
-120 + -20b = 20 + 0
-120 + -20b = 20

Add '120' to each side of the equation.
-120 + 120 + -20b = 20 + 120

Combine like terms: -120 + 120 = 0
0 + -20b = 20 + 120
-20b = 20 + 120

Combine like terms: 20 + 120 = 140
-20b = 140

Divide each side by '-20'.
b = -7

Simplifying
b = -7

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