3y-5+7y=20

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Solution for 3y-5+7y=20 equation:


Simplifying
3y + -5 + 7y = 20

Reorder the terms:
-5 + 3y + 7y = 20

Combine like terms: 3y + 7y = 10y
-5 + 10y = 20

Solving
-5 + 10y = 20

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 + 10y = 20 + 5

Combine like terms: -5 + 5 = 0
0 + 10y = 20 + 5
10y = 20 + 5

Combine like terms: 20 + 5 = 25
10y = 25

Divide each side by '10'.
y = 2.5

Simplifying
y = 2.5

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