3x+4-x=7

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Solution for 3x+4-x=7 equation: 


Simplifying
3x + 4 + -1x = 7

Reorder the terms:
4 + 3x + -1x = 7

Combine like terms: 3x + -1x = 2x
4 + 2x = 7

Solving
4 + 2x = 7

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 2x = 7 + -4

Combine like terms: 4 + -4 = 0
0 + 2x = 7 + -4
2x = 7 + -4

Combine like terms: 7 + -4 = 3
2x = 3

Divide each side by '2'.
x = 1.5

Simplifying
x = 1.5

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