30-4x=20-5y

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Solution for 30-4x=20-5y equation: 


Simplifying
30 + -4x = 20 + -5y

Solving
30 + -4x = 20 + -5y

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 + -5y

Combine like terms: 30 + -30 = 0
0 + -4x = 20 + -30 + -5y
-4x = 20 + -30 + -5y

Combine like terms: 20 + -30 = -10
-4x = -10 + -5y

Divide each side by '-4'.
x = 2.5 + 1.25y

Simplifying
x = 2.5 + 1.25y

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