3(y+7)=(y+8)-y

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Solution for 3(y+7)=(y+8)-y equation: 


Simplifying
3(y + 7) = (y + 8) + -1y

Reorder the terms:
3(7 + y) = (y + 8) + -1y
(7 * 3 + y * 3) = (y + 8) + -1y
(21 + 3y) = (y + 8) + -1y

Reorder the terms:
21 + 3y = (8 + y) + -1y

Remove parenthesis around (8 + y)
21 + 3y = 8 + y + -1y

Combine like terms: y + -1y = 0
21 + 3y = 8 + 0
21 + 3y = 8

Solving
21 + 3y = 8

Solving for variable 'y'.

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

Add '-21' to each side of the equation.
21 + -21 + 3y = 8 + -21

Combine like terms: 21 + -21 = 0
0 + 3y = 8 + -21
3y = 8 + -21

Combine like terms: 8 + -21 = -13
3y = -13

Divide each side by '3'.
y = -4.333333333

Simplifying
y = -4.333333333

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