15-2b=-3

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Solution for 15-2b=-3 equation: 


Simplifying
15 + -2b = -3

Solving
15 + -2b = -3

Solving for variable 'b'.

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

Add '-15' to each side of the equation.
15 + -15 + -2b = -3 + -15

Combine like terms: 15 + -15 = 0
0 + -2b = -3 + -15
-2b = -3 + -15

Combine like terms: -3 + -15 = -18
-2b = -18

Divide each side by '-2'.
b = 9

Simplifying
b = 9

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