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

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


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

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

Reorder the terms:
9 + 3y = 9(-7 + y)
9 + 3y = (-7 * 9 + y * 9)
9 + 3y = (-63 + 9y)

Solving
9 + 3y = -63 + 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
9 + 3y + -9y = -63 + 9y + -9y

Combine like terms: 3y + -9y = -6y
9 + -6y = -63 + 9y + -9y

Combine like terms: 9y + -9y = 0
9 + -6y = -63 + 0
9 + -6y = -63

Add '-9' to each side of the equation.
9 + -9 + -6y = -63 + -9

Combine like terms: 9 + -9 = 0
0 + -6y = -63 + -9
-6y = -63 + -9

Combine like terms: -63 + -9 = -72
-6y = -72

Divide each side by '-6'.
y = 12

Simplifying
y = 12

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