18=6-(b+9)

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Solution for 18=6-(b+9) equation:


Simplifying
18 = 6 + -1(b + 9)

Reorder the terms:
18 = 6 + -1(9 + b)
18 = 6 + (9 * -1 + b * -1)
18 = 6 + (-9 + -1b)

Combine like terms: 6 + -9 = -3
18 = -3 + -1b

Solving
18 = -3 + -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.
18 + b = -3 + -1b + b

Combine like terms: -1b + b = 0
18 + b = -3 + 0
18 + b = -3

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

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

Combine like terms: -3 + -18 = -21
b = -21

Simplifying
b = -21

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