28-x+4x=7

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Solution for 28-x+4x=7 equation: 


Simplifying
28 + -1x + 4x = 7

Combine like terms: -1x + 4x = 3x
28 + 3x = 7

Solving
28 + 3x = 7

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 + 3x = 7 + -28

Combine like terms: 28 + -28 = 0
0 + 3x = 7 + -28
3x = 7 + -28

Combine like terms: 7 + -28 = -21
3x = -21

Divide each side by '3'.
x = -7

Simplifying
x = -7

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