4x+2x+78=x+120

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Solution for 4x+2x+78=x+120 equation:


Simplifying
4x + 2x + 78 = x + 120

Reorder the terms:
78 + 4x + 2x = x + 120

Combine like terms: 4x + 2x = 6x
78 + 6x = x + 120

Reorder the terms:
78 + 6x = 120 + x

Solving
78 + 6x = 120 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
78 + 6x + -1x = 120 + x + -1x

Combine like terms: 6x + -1x = 5x
78 + 5x = 120 + x + -1x

Combine like terms: x + -1x = 0
78 + 5x = 120 + 0
78 + 5x = 120

Add '-78' to each side of the equation.
78 + -78 + 5x = 120 + -78

Combine like terms: 78 + -78 = 0
0 + 5x = 120 + -78
5x = 120 + -78

Combine like terms: 120 + -78 = 42
5x = 42

Divide each side by '5'.
x = 8.4

Simplifying
x = 8.4

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