18=-(x-3)

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Solution for 18=-(x-3) equation:


Simplifying
18 = -1(x + -3)

Reorder the terms:
18 = -1(-3 + x)
18 = (-3 * -1 + x * -1)
18 = (3 + -1x)

Solving
18 = 3 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
18 + x = 3 + -1x + x

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

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

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

Combine like terms: 3 + -18 = -15
x = -15

Simplifying
x = -15

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