7+3y=2(y+3)-2(-1-y)

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Solution for 7+3y=2(y+3)-2(-1-y) equation:


Simplifying
7 + 3y = 2(y + 3) + -2(-1 + -1y)

Reorder the terms:
7 + 3y = 2(3 + y) + -2(-1 + -1y)
7 + 3y = (3 * 2 + y * 2) + -2(-1 + -1y)
7 + 3y = (6 + 2y) + -2(-1 + -1y)
7 + 3y = 6 + 2y + (-1 * -2 + -1y * -2)
7 + 3y = 6 + 2y + (2 + 2y)

Reorder the terms:
7 + 3y = 6 + 2 + 2y + 2y

Combine like terms: 6 + 2 = 8
7 + 3y = 8 + 2y + 2y

Combine like terms: 2y + 2y = 4y
7 + 3y = 8 + 4y

Solving
7 + 3y = 8 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
7 + 3y + -4y = 8 + 4y + -4y

Combine like terms: 3y + -4y = -1y
7 + -1y = 8 + 4y + -4y

Combine like terms: 4y + -4y = 0
7 + -1y = 8 + 0
7 + -1y = 8

Add '-7' to each side of the equation.
7 + -7 + -1y = 8 + -7

Combine like terms: 7 + -7 = 0
0 + -1y = 8 + -7
-1y = 8 + -7

Combine like terms: 8 + -7 = 1
-1y = 1

Divide each side by '-1'.
y = -1

Simplifying
y = -1

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