(5y+7)-(4+4y)=9

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Solution for (5y+7)-(4+4y)=9 equation:


Simplifying
(5y + 7) + -1(4 + 4y) = 9

Reorder the terms:
(7 + 5y) + -1(4 + 4y) = 9

Remove parenthesis around (7 + 5y)
7 + 5y + -1(4 + 4y) = 9
7 + 5y + (4 * -1 + 4y * -1) = 9
7 + 5y + (-4 + -4y) = 9

Reorder the terms:
7 + -4 + 5y + -4y = 9

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

Combine like terms: 5y + -4y = 1y
3 + 1y = 9

Solving
3 + 1y = 9

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + 1y = 9 + -3

Combine like terms: 3 + -3 = 0
0 + 1y = 9 + -3
1y = 9 + -3

Combine like terms: 9 + -3 = 6
1y = 6

Divide each side by '1'.
y = 6

Simplifying
y = 6

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