x=3(90-x)

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Solution for x=3(90-x) equation: 


Simplifying
x = 3(90 + -1x)
x = (90 * 3 + -1x * 3)
x = (270 + -3x)

Solving
x = 270 + -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.
x + 3x = 270 + -3x + 3x

Combine like terms: x + 3x = 4x
4x = 270 + -3x + 3x

Combine like terms: -3x + 3x = 0
4x = 270 + 0
4x = 270

Divide each side by '4'.
x = 67.5

Simplifying
x = 67.5

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