9=18-b

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Solution for 9=18-b equation:


Simplifying
9 = 18 + -1b

Solving
9 = 18 + -1b

Solving for variable 'b'.

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

Add 'b' to each side of the equation.
9 + b = 18 + -1b + b

Combine like terms: -1b + b = 0
9 + b = 18 + 0
9 + b = 18

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

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

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

Simplifying
b = 9

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