20-3y=7y

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Solution for 20-3y=7y equation:


Simplifying
20 + -3y = 7y

Solving
20 + -3y = 7y

Solving for variable 'y'.

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

Add '-7y' to each side of the equation.
20 + -3y + -7y = 7y + -7y

Combine like terms: -3y + -7y = -10y
20 + -10y = 7y + -7y

Combine like terms: 7y + -7y = 0
20 + -10y = 0

Add '-20' to each side of the equation.
20 + -20 + -10y = 0 + -20

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

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

Divide each side by '-10'.
y = 2

Simplifying
y = 2

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