x+3x-28=

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Solution for x+3x-28= equation: 


Simplifying
x + 3x + -28 = 0

Reorder the terms:
-28 + x + 3x = 0

Combine like terms: x + 3x = 4x
-28 + 4x = 0

Solving
-28 + 4x = 0

Solving for variable 'x'.

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

Add '28' to each side of the equation.
-28 + 28 + 4x = 0 + 28

Combine like terms: -28 + 28 = 0
0 + 4x = 0 + 28
4x = 0 + 28

Combine like terms: 0 + 28 = 28
4x = 28

Divide each side by '4'.
x = 7

Simplifying
x = 7

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