400-30y=150-20y

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Solution for 400-30y=150-20y equation:


Simplifying
400 + -30y = 150 + -20y

Solving
400 + -30y = 150 + -20y

Solving for variable 'y'.

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

Add '20y' to each side of the equation.
400 + -30y + 20y = 150 + -20y + 20y

Combine like terms: -30y + 20y = -10y
400 + -10y = 150 + -20y + 20y

Combine like terms: -20y + 20y = 0
400 + -10y = 150 + 0
400 + -10y = 150

Add '-400' to each side of the equation.
400 + -400 + -10y = 150 + -400

Combine like terms: 400 + -400 = 0
0 + -10y = 150 + -400
-10y = 150 + -400

Combine like terms: 150 + -400 = -250
-10y = -250

Divide each side by '-10'.
y = 25

Simplifying
y = 25

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