7y-5-3y=15

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Solution for 7y-5-3y=15 equation: 


Simplifying
7y + -5 + -3y = 15

Reorder the terms:
-5 + 7y + -3y = 15

Combine like terms: 7y + -3y = 4y
-5 + 4y = 15

Solving
-5 + 4y = 15

Solving for variable 'y'.

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

Add '5' to each side of the equation.
-5 + 5 + 4y = 15 + 5

Combine like terms: -5 + 5 = 0
0 + 4y = 15 + 5
4y = 15 + 5

Combine like terms: 15 + 5 = 20
4y = 20

Divide each side by '4'.
y = 5

Simplifying
y = 5

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