18=3b-9

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Solution for 18=3b-9 equation:


Simplifying
18 = 3b + -9

Reorder the terms:
18 = -9 + 3b

Solving
18 = -9 + 3b

Solving for variable 'b'.

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

Add '-3b' to each side of the equation.
18 + -3b = -9 + 3b + -3b

Combine like terms: 3b + -3b = 0
18 + -3b = -9 + 0
18 + -3b = -9

Add '-18' to each side of the equation.
18 + -18 + -3b = -9 + -18

Combine like terms: 18 + -18 = 0
0 + -3b = -9 + -18
-3b = -9 + -18

Combine like terms: -9 + -18 = -27
-3b = -27

Divide each side by '-3'.
b = 9

Simplifying
b = 9

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