7y+20=9y

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Solution for 7y+20=9y equation:


Simplifying
7y + 20 = 9y

Reorder the terms:
20 + 7y = 9y

Solving
20 + 7y = 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
20 + 7y + -9y = 9y + -9y

Combine like terms: 7y + -9y = -2y
20 + -2y = 9y + -9y

Combine like terms: 9y + -9y = 0
20 + -2y = 0

Add '-20' to each side of the equation.
20 + -20 + -2y = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -2y = 0 + -20
-2y = 0 + -20

Combine like terms: 0 + -20 = -20
-2y = -20

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

Simplifying
y = 10

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