x-27-(x+3)=18-3(x-21)

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Solution for x-27-(x+3)=18-3(x-21) equation:


Simplifying
x + -27 + -1(x + 3) = 18 + -3(x + -21)

Reorder the terms:
x + -27 + -1(3 + x) = 18 + -3(x + -21)
x + -27 + (3 * -1 + x * -1) = 18 + -3(x + -21)
x + -27 + (-3 + -1x) = 18 + -3(x + -21)

Reorder the terms:
-27 + -3 + x + -1x = 18 + -3(x + -21)

Combine like terms: -27 + -3 = -30
-30 + x + -1x = 18 + -3(x + -21)

Combine like terms: x + -1x = 0
-30 + 0 = 18 + -3(x + -21)
-30 = 18 + -3(x + -21)

Reorder the terms:
-30 = 18 + -3(-21 + x)
-30 = 18 + (-21 * -3 + x * -3)
-30 = 18 + (63 + -3x)

Combine like terms: 18 + 63 = 81
-30 = 81 + -3x

Solving
-30 = 81 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
-30 + 3x = 81 + -3x + 3x

Combine like terms: -3x + 3x = 0
-30 + 3x = 81 + 0
-30 + 3x = 81

Add '30' to each side of the equation.
-30 + 30 + 3x = 81 + 30

Combine like terms: -30 + 30 = 0
0 + 3x = 81 + 30
3x = 81 + 30

Combine like terms: 81 + 30 = 111
3x = 111

Divide each side by '3'.
x = 37

Simplifying
x = 37

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