15-3b=12-2b

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Solution for 15-3b=12-2b equation:


Simplifying
15 + -3b = 12 + -2b

Solving
15 + -3b = 12 + -2b

Solving for variable 'b'.

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

Add '2b' to each side of the equation.
15 + -3b + 2b = 12 + -2b + 2b

Combine like terms: -3b + 2b = -1b
15 + -1b = 12 + -2b + 2b

Combine like terms: -2b + 2b = 0
15 + -1b = 12 + 0
15 + -1b = 12

Add '-15' to each side of the equation.
15 + -15 + -1b = 12 + -15

Combine like terms: 15 + -15 = 0
0 + -1b = 12 + -15
-1b = 12 + -15

Combine like terms: 12 + -15 = -3
-1b = -3

Divide each side by '-1'.
b = 3

Simplifying
b = 3

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