3x+90=4x-1

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Solution for 3x+90=4x-1 equation:


Simplifying
3x + 90 = 4x + -1

Reorder the terms:
90 + 3x = 4x + -1

Reorder the terms:
90 + 3x = -1 + 4x

Solving
90 + 3x = -1 + 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 + 3x + -4x = -1 + 4x + -4x

Combine like terms: 3x + -4x = -1x
90 + -1x = -1 + 4x + -4x

Combine like terms: 4x + -4x = 0
90 + -1x = -1 + 0
90 + -1x = -1

Add '-90' to each side of the equation.
90 + -90 + -1x = -1 + -90

Combine like terms: 90 + -90 = 0
0 + -1x = -1 + -90
-1x = -1 + -90

Combine like terms: -1 + -90 = -91
-1x = -91

Divide each side by '-1'.
x = 91

Simplifying
x = 91

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