30-4x=20

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Solution for 30-4x=20 equation: 


Simplifying
30 + -4x = 20

Solving
30 + -4x = 20

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + -4x = 20 + -30

Combine like terms: 30 + -30 = 0
0 + -4x = 20 + -30
-4x = 20 + -30

Combine like terms: 20 + -30 = -10
-4x = -10

Divide each side by '-4'.
x = 2.5

Simplifying
x = 2.5

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