9y-20=4y+40

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Solution for 9y-20=4y+40 equation:


Simplifying
9y + -20 = 4y + 40

Reorder the terms:
-20 + 9y = 4y + 40

Reorder the terms:
-20 + 9y = 40 + 4y

Solving
-20 + 9y = 40 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
-20 + 9y + -4y = 40 + 4y + -4y

Combine like terms: 9y + -4y = 5y
-20 + 5y = 40 + 4y + -4y

Combine like terms: 4y + -4y = 0
-20 + 5y = 40 + 0
-20 + 5y = 40

Add '20' to each side of the equation.
-20 + 20 + 5y = 40 + 20

Combine like terms: -20 + 20 = 0
0 + 5y = 40 + 20
5y = 40 + 20

Combine like terms: 40 + 20 = 60
5y = 60

Divide each side by '5'.
y = 12

Simplifying
y = 12

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