-140=-5(-4b)

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Solution for -140=-5(-4b) equation:


Simplifying
-140 = -5(-4b)

Remove parenthesis around (-4b)
-140 = -5 * -4b

Multiply -5 * -4
-140 = 20b

Solving
-140 = 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.
-140 + -20b = 20b + -20b

Combine like terms: 20b + -20b = 0
-140 + -20b = 0

Add '140' to each side of the equation.
-140 + 140 + -20b = 0 + 140

Combine like terms: -140 + 140 = 0
0 + -20b = 0 + 140
-20b = 0 + 140

Combine like terms: 0 + 140 = 140
-20b = 140

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

Simplifying
b = -7

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