3x+x+8=40

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Solution for 3x+x+8=40 equation: 


Simplifying
3x + x + 8 = 40

Reorder the terms:
8 + 3x + x = 40

Combine like terms: 3x + x = 4x
8 + 4x = 40

Solving
8 + 4x = 40

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 = 40 + -8

Combine like terms: 8 + -8 = 0
0 + 4x = 40 + -8
4x = 40 + -8

Combine like terms: 40 + -8 = 32
4x = 32

Divide each side by '4'.
x = 8

Simplifying
x = 8

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