-420=30(-2b)

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Solution for -420=30(-2b) equation:


Simplifying
-420 = 30(-2b)

Remove parenthesis around (-2b)
-420 = 30 * -2b

Multiply 30 * -2
-420 = -60b

Solving
-420 = -60b

Solving for variable 'b'.

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

Add '60b' to each side of the equation.
-420 + 60b = -60b + 60b

Combine like terms: -60b + 60b = 0
-420 + 60b = 0

Add '420' to each side of the equation.
-420 + 420 + 60b = 0 + 420

Combine like terms: -420 + 420 = 0
0 + 60b = 0 + 420
60b = 0 + 420

Combine like terms: 0 + 420 = 420
60b = 420

Divide each side by '60'.
b = 7

Simplifying
b = 7

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