3x+90=4x+70

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Solution for 3x+90=4x+70 equation:


Simplifying
3x + 90 = 4x + 70

Reorder the terms:
90 + 3x = 4x + 70

Reorder the terms:
90 + 3x = 70 + 4x

Solving
90 + 3x = 70 + 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 = 70 + 4x + -4x

Combine like terms: 3x + -4x = -1x
90 + -1x = 70 + 4x + -4x

Combine like terms: 4x + -4x = 0
90 + -1x = 70 + 0
90 + -1x = 70

Add '-90' to each side of the equation.
90 + -90 + -1x = 70 + -90

Combine like terms: 90 + -90 = 0
0 + -1x = 70 + -90
-1x = 70 + -90

Combine like terms: 70 + -90 = -20
-1x = -20

Divide each side by '-1'.
x = 20

Simplifying
x = 20

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