x+3x-8=7

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Solution for x+3x-8=7 equation:


Simplifying
x + 3x + -8 = 7

Reorder the terms:
-8 + x + 3x = 7

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

Solving
-8 + 4x = 7

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 4x = 7 + 8

Combine like terms: -8 + 8 = 0
0 + 4x = 7 + 8
4x = 7 + 8

Combine like terms: 7 + 8 = 15
4x = 15

Divide each side by '4'.
x = 3.75

Simplifying
x = 3.75

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