90+x=4x-75

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Solution for 90+x=4x-75 equation:


Simplifying
90 + x = 4x + -75

Reorder the terms:
90 + x = -75 + 4x

Solving
90 + x = -75 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
90 + x + -4x = -75 + 4x + -4x

Combine like terms: x + -4x = -3x
90 + -3x = -75 + 4x + -4x

Combine like terms: 4x + -4x = 0
90 + -3x = -75 + 0
90 + -3x = -75

Add '-90' to each side of the equation.
90 + -90 + -3x = -75 + -90

Combine like terms: 90 + -90 = 0
0 + -3x = -75 + -90
-3x = -75 + -90

Combine like terms: -75 + -90 = -165
-3x = -165

Divide each side by '-3'.
x = 55

Simplifying
x = 55

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