2b+9=b+12

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Solution for 2b+9=b+12 equation:


Simplifying
2b + 9 = b + 12

Reorder the terms:
9 + 2b = b + 12

Reorder the terms:
9 + 2b = 12 + b

Solving
9 + 2b = 12 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
9 + 2b + -1b = 12 + b + -1b

Combine like terms: 2b + -1b = 1b
9 + 1b = 12 + b + -1b

Combine like terms: b + -1b = 0
9 + 1b = 12 + 0
9 + 1b = 12

Add '-9' to each side of the equation.
9 + -9 + 1b = 12 + -9

Combine like terms: 9 + -9 = 0
0 + 1b = 12 + -9
1b = 12 + -9

Combine like terms: 12 + -9 = 3
1b = 3

Divide each side by '1'.
b = 3

Simplifying
b = 3

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