5y+9=7(y-3)

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


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

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

Reorder the terms:
9 + 5y = 7(-3 + y)
9 + 5y = (-3 * 7 + y * 7)
9 + 5y = (-21 + 7y)

Solving
9 + 5y = -21 + 7y

Solving for variable 'y'.

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

Add '-7y' to each side of the equation.
9 + 5y + -7y = -21 + 7y + -7y

Combine like terms: 5y + -7y = -2y
9 + -2y = -21 + 7y + -7y

Combine like terms: 7y + -7y = 0
9 + -2y = -21 + 0
9 + -2y = -21

Add '-9' to each side of the equation.
9 + -9 + -2y = -21 + -9

Combine like terms: 9 + -9 = 0
0 + -2y = -21 + -9
-2y = -21 + -9

Combine like terms: -21 + -9 = -30
-2y = -30

Divide each side by '-2'.
y = 15

Simplifying
y = 15

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