X+3x+4x=100

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Solution for X+3x+4x=100 equation: 


Simplifying
X + 3x + 4x = 100

Combine like terms: 3x + 4x = 7x
X + 7x = 100

Solving
X + 7x = 100

Solving for variable 'X'.

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

Add '-7x' to each side of the equation.
X + 7x + -7x = 100 + -7x

Combine like terms: 7x + -7x = 0
X + 0 = 100 + -7x
X = 100 + -7x

Simplifying
X = 100 + -7x

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