3x+4x=8x

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Solution for 3x+4x=8x equation: 


Simplifying
3x + 4x = 8x

Combine like terms: 3x + 4x = 7x
7x = 8x

Solving
7x = 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
7x + -8x = 8x + -8x

Combine like terms: 7x + -8x = -1x
-1x = 8x + -8x

Combine like terms: 8x + -8x = 0
-1x = 0

Divide each side by '-1'.
x = 0

Simplifying
x = 0

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