-2(b+3)=15

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Solution for -2(b+3)=15 equation: 


Simplifying
-2(b + 3) = 15

Reorder the terms:
-2(3 + b) = 15
(3 * -2 + b * -2) = 15
(-6 + -2b) = 15

Solving
-6 + -2b = 15

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 + -2b = 15 + 6

Combine like terms: -6 + 6 = 0
0 + -2b = 15 + 6
-2b = 15 + 6

Combine like terms: 15 + 6 = 21
-2b = 21

Divide each side by '-2'.
b = -10.5

Simplifying
b = -10.5

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