30-x=12.5+4x

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Solution for 30-x=12.5+4x equation:


Simplifying
30 + -1x = 12.5 + 4x

Solving
30 + -1x = 12.5 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
30 + -1x + -4x = 12.5 + 4x + -4x

Combine like terms: -1x + -4x = -5x
30 + -5x = 12.5 + 4x + -4x

Combine like terms: 4x + -4x = 0
30 + -5x = 12.5 + 0
30 + -5x = 12.5

Add '-30' to each side of the equation.
30 + -30 + -5x = 12.5 + -30

Combine like terms: 30 + -30 = 0
0 + -5x = 12.5 + -30
-5x = 12.5 + -30

Combine like terms: 12.5 + -30 = -17.5
-5x = -17.5

Divide each side by '-5'.
x = 3.5

Simplifying
x = 3.5

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