12-7b=18-9b

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Solution for 12-7b=18-9b equation:


Simplifying
12 + -7b = 18 + -9b

Solving
12 + -7b = 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.
12 + -7b + 9b = 18 + -9b + 9b

Combine like terms: -7b + 9b = 2b
12 + 2b = 18 + -9b + 9b

Combine like terms: -9b + 9b = 0
12 + 2b = 18 + 0
12 + 2b = 18

Add '-12' to each side of the equation.
12 + -12 + 2b = 18 + -12

Combine like terms: 12 + -12 = 0
0 + 2b = 18 + -12
2b = 18 + -12

Combine like terms: 18 + -12 = 6
2b = 6

Divide each side by '2'.
b = 3

Simplifying
b = 3

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