(9y-12)-(5y-7)=

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Solution for (9y-12)-(5y-7)= equation:


Simplifying
(9y + -12) + -1(5y + -7) = 0

Reorder the terms:
(-12 + 9y) + -1(5y + -7) = 0

Remove parenthesis around (-12 + 9y)
-12 + 9y + -1(5y + -7) = 0

Reorder the terms:
-12 + 9y + -1(-7 + 5y) = 0
-12 + 9y + (-7 * -1 + 5y * -1) = 0
-12 + 9y + (7 + -5y) = 0

Reorder the terms:
-12 + 7 + 9y + -5y = 0

Combine like terms: -12 + 7 = -5
-5 + 9y + -5y = 0

Combine like terms: 9y + -5y = 4y
-5 + 4y = 0

Solving
-5 + 4y = 0

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 = 0 + 5

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

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

Divide each side by '4'.
y = 1.25

Simplifying
y = 1.25

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