7(y-3)=5(15-y)

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Solution for 7(y-3)=5(15-y) equation:


Simplifying
7(y + -3) = 5(15 + -1y)

Reorder the terms:
7(-3 + y) = 5(15 + -1y)
(-3 * 7 + y * 7) = 5(15 + -1y)
(-21 + 7y) = 5(15 + -1y)
-21 + 7y = (15 * 5 + -1y * 5)
-21 + 7y = (75 + -5y)

Solving
-21 + 7y = 75 + -5y

Solving for variable 'y'.

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

Add '5y' to each side of the equation.
-21 + 7y + 5y = 75 + -5y + 5y

Combine like terms: 7y + 5y = 12y
-21 + 12y = 75 + -5y + 5y

Combine like terms: -5y + 5y = 0
-21 + 12y = 75 + 0
-21 + 12y = 75

Add '21' to each side of the equation.
-21 + 21 + 12y = 75 + 21

Combine like terms: -21 + 21 = 0
0 + 12y = 75 + 21
12y = 75 + 21

Combine like terms: 75 + 21 = 96
12y = 96

Divide each side by '12'.
y = 8

Simplifying
y = 8

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