-280=-10(-4b)

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Solution for -280=-10(-4b) equation:


Simplifying
-280 = -10(-4b)

Remove parenthesis around (-4b)
-280 = -10 * -4b

Multiply -10 * -4
-280 = 40b

Solving
-280 = 40b

Solving for variable 'b'.

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

Add '-40b' to each side of the equation.
-280 + -40b = 40b + -40b

Combine like terms: 40b + -40b = 0
-280 + -40b = 0

Add '280' to each side of the equation.
-280 + 280 + -40b = 0 + 280

Combine like terms: -280 + 280 = 0
0 + -40b = 0 + 280
-40b = 0 + 280

Combine like terms: 0 + 280 = 280
-40b = 280

Divide each side by '-40'.
b = -7

Simplifying
b = -7

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