18=-5b-4b

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Solution for 18=-5b-4b equation:


Simplifying
18 = -5b + -4b

Combine like terms: -5b + -4b = -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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