3(y+7)+y=2(y+5)-5

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Solution for 3(y+7)+y=2(y+5)-5 equation:


Simplifying
3(y + 7) + y = 2(y + 5) + -5

Reorder the terms:
3(7 + y) + y = 2(y + 5) + -5
(7 * 3 + y * 3) + y = 2(y + 5) + -5
(21 + 3y) + y = 2(y + 5) + -5

Combine like terms: 3y + y = 4y
21 + 4y = 2(y + 5) + -5

Reorder the terms:
21 + 4y = 2(5 + y) + -5
21 + 4y = (5 * 2 + y * 2) + -5
21 + 4y = (10 + 2y) + -5

Reorder the terms:
21 + 4y = 10 + -5 + 2y

Combine like terms: 10 + -5 = 5
21 + 4y = 5 + 2y

Solving
21 + 4y = 5 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
21 + 4y + -2y = 5 + 2y + -2y

Combine like terms: 4y + -2y = 2y
21 + 2y = 5 + 2y + -2y

Combine like terms: 2y + -2y = 0
21 + 2y = 5 + 0
21 + 2y = 5

Add '-21' to each side of the equation.
21 + -21 + 2y = 5 + -21

Combine like terms: 21 + -21 = 0
0 + 2y = 5 + -21
2y = 5 + -21

Combine like terms: 5 + -21 = -16
2y = -16

Divide each side by '2'.
y = -8

Simplifying
y = -8

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