7-9y-12=3y+5-8y

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Solution for 7-9y-12=3y+5-8y equation:


Simplifying
7 + -9y + -12 = 3y + 5 + -8y

Reorder the terms:
7 + -12 + -9y = 3y + 5 + -8y

Combine like terms: 7 + -12 = -5
-5 + -9y = 3y + 5 + -8y

Reorder the terms:
-5 + -9y = 5 + 3y + -8y

Combine like terms: 3y + -8y = -5y
-5 + -9y = 5 + -5y

Solving
-5 + -9y = 5 + -5y

Solving for variable 'y'.

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

Add '5y' to each side of the equation.
-5 + -9y + 5y = 5 + -5y + 5y

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

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

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

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

Combine like terms: 5 + 5 = 10
-4y = 10

Divide each side by '-4'.
y = -2.5

Simplifying
y = -2.5

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