3+15=12b-3b

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


Simplifying
3 + 15 = 12b + -3b

Combine like terms: 3 + 15 = 18
18 = 12b + -3b

Combine like terms: 12b + -3b = 9b
18 = 9b

Solving
18 = 9b

Solving for variable 'b'.

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

Add '-9b' to each side of the equation.
18 + -9b = 9b + -9b

Combine like terms: 9b + -9b = 0
18 + -9b = 0

Add '-18' to each side of the equation.
18 + -18 + -9b = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -9b = 0 + -18
-9b = 0 + -18

Combine like terms: 0 + -18 = -18
-9b = -18

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

Simplifying
b = 2

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