(9y+7)-(7y+3)=3y-5

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Solution for (9y+7)-(7y+3)=3y-5 equation:


Simplifying
(9y + 7) + -1(7y + 3) = 3y + -5

Reorder the terms:
(7 + 9y) + -1(7y + 3) = 3y + -5

Remove parenthesis around (7 + 9y)
7 + 9y + -1(7y + 3) = 3y + -5

Reorder the terms:
7 + 9y + -1(3 + 7y) = 3y + -5
7 + 9y + (3 * -1 + 7y * -1) = 3y + -5
7 + 9y + (-3 + -7y) = 3y + -5

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

Combine like terms: 7 + -3 = 4
4 + 9y + -7y = 3y + -5

Combine like terms: 9y + -7y = 2y
4 + 2y = 3y + -5

Reorder the terms:
4 + 2y = -5 + 3y

Solving
4 + 2y = -5 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
4 + 2y + -3y = -5 + 3y + -3y

Combine like terms: 2y + -3y = -1y
4 + -1y = -5 + 3y + -3y

Combine like terms: 3y + -3y = 0
4 + -1y = -5 + 0
4 + -1y = -5

Add '-4' to each side of the equation.
4 + -4 + -1y = -5 + -4

Combine like terms: 4 + -4 = 0
0 + -1y = -5 + -4
-1y = -5 + -4

Combine like terms: -5 + -4 = -9
-1y = -9

Divide each side by '-1'.
y = 9

Simplifying
y = 9

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