3x+x-4=20

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Solution for 3x+x-4=20 equation: 


Simplifying
3x + x + -4 = 20

Reorder the terms:
-4 + 3x + x = 20

Combine like terms: 3x + x = 4x
-4 + 4x = 20

Solving
-4 + 4x = 20

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 + 4x = 20 + 4

Combine like terms: -4 + 4 = 0
0 + 4x = 20 + 4
4x = 20 + 4

Combine like terms: 20 + 4 = 24
4x = 24

Divide each side by '4'.
x = 6

Simplifying
x = 6

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