(7y+4)-(3+6y)=9

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Solution for (7y+4)-(3+6y)=9 equation:


Simplifying
(7y + 4) + -1(3 + 6y) = 9

Reorder the terms:
(4 + 7y) + -1(3 + 6y) = 9

Remove parenthesis around (4 + 7y)
4 + 7y + -1(3 + 6y) = 9
4 + 7y + (3 * -1 + 6y * -1) = 9
4 + 7y + (-3 + -6y) = 9

Reorder the terms:
4 + -3 + 7y + -6y = 9

Combine like terms: 4 + -3 = 1
1 + 7y + -6y = 9

Combine like terms: 7y + -6y = 1y
1 + 1y = 9

Solving
1 + 1y = 9

Solving for variable 'y'.

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

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

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

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

Divide each side by '1'.
y = 8

Simplifying
y = 8

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