(9y+3)-(8y-9)=

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Solution for (9y+3)-(8y-9)= equation:


Simplifying
(9y + 3) + -1(8y + -9) = 0

Reorder the terms:
(3 + 9y) + -1(8y + -9) = 0

Remove parenthesis around (3 + 9y)
3 + 9y + -1(8y + -9) = 0

Reorder the terms:
3 + 9y + -1(-9 + 8y) = 0
3 + 9y + (-9 * -1 + 8y * -1) = 0
3 + 9y + (9 + -8y) = 0

Reorder the terms:
3 + 9 + 9y + -8y = 0

Combine like terms: 3 + 9 = 12
12 + 9y + -8y = 0

Combine like terms: 9y + -8y = 1y
12 + 1y = 0

Solving
12 + 1y = 0

Solving for variable 'y'.

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

Add '-12' to each side of the equation.
12 + -12 + 1y = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 1y = 0 + -12
1y = 0 + -12

Combine like terms: 0 + -12 = -12
1y = -12

Divide each side by '1'.
y = -12

Simplifying
y = -12

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