-2(3-5b)=-66

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Solution for -2(3-5b)=-66 equation: 


Simplifying
-2(3 + -5b) = -66
(3 * -2 + -5b * -2) = -66
(-6 + 10b) = -66

Solving
-6 + 10b = -66

Solving for variable 'b'.

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

Add '6' to each side of the equation.
-6 + 6 + 10b = -66 + 6

Combine like terms: -6 + 6 = 0
0 + 10b = -66 + 6
10b = -66 + 6

Combine like terms: -66 + 6 = -60
10b = -60

Divide each side by '10'.
b = -6

Simplifying
b = -6

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