3x+x=300-40

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Solution for 3x+x=300-40 equation: 


Simplifying
3x + x = 300 + -40

Combine like terms: 3x + x = 4x
4x = 300 + -40

Combine like terms: 300 + -40 = 260
4x = 260

Solving
4x = 260

Solving for variable 'x'.

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

Divide each side by '4'.
x = 65

Simplifying
x = 65

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