420-3x=4x

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Solution for 420-3x=4x equation:


Simplifying
420 + -3x = 4x

Solving
420 + -3x = 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.
420 + -3x + -4x = 4x + -4x

Combine like terms: -3x + -4x = -7x
420 + -7x = 4x + -4x

Combine like terms: 4x + -4x = 0
420 + -7x = 0

Add '-420' to each side of the equation.
420 + -420 + -7x = 0 + -420

Combine like terms: 420 + -420 = 0
0 + -7x = 0 + -420
-7x = 0 + -420

Combine like terms: 0 + -420 = -420
-7x = -420

Divide each side by '-7'.
x = 60

Simplifying
x = 60

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