(7y-10)+(2y-5)=12

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Solution for (7y-10)+(2y-5)=12 equation:


Simplifying
(7y + -10) + (2y + -5) = 12

Reorder the terms:
(-10 + 7y) + (2y + -5) = 12

Remove parenthesis around (-10 + 7y)
-10 + 7y + (2y + -5) = 12

Reorder the terms:
-10 + 7y + (-5 + 2y) = 12

Remove parenthesis around (-5 + 2y)
-10 + 7y + -5 + 2y = 12

Reorder the terms:
-10 + -5 + 7y + 2y = 12

Combine like terms: -10 + -5 = -15
-15 + 7y + 2y = 12

Combine like terms: 7y + 2y = 9y
-15 + 9y = 12

Solving
-15 + 9y = 12

Solving for variable 'y'.

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

Add '15' to each side of the equation.
-15 + 15 + 9y = 12 + 15

Combine like terms: -15 + 15 = 0
0 + 9y = 12 + 15
9y = 12 + 15

Combine like terms: 12 + 15 = 27
9y = 27

Divide each side by '9'.
y = 3

Simplifying
y = 3

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