-2[(4y+4)-(6y-2)]=4(7-y)-7

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Solution for -2[(4y+4)-(6y-2)]=4(7-y)-7 equation:


Simplifying
-2[(4y + 4) + -1(6y + -2)] = 4(7 + -1y) + -7

Reorder the terms:
-2[(4 + 4y) + -1(6y + -2)] = 4(7 + -1y) + -7

Remove parenthesis around (4 + 4y)
-2[4 + 4y + -1(6y + -2)] = 4(7 + -1y) + -7

Reorder the terms:
-2[4 + 4y + -1(-2 + 6y)] = 4(7 + -1y) + -7
-2[4 + 4y + (-2 * -1 + 6y * -1)] = 4(7 + -1y) + -7
-2[4 + 4y + (2 + -6y)] = 4(7 + -1y) + -7

Reorder the terms:
-2[4 + 2 + 4y + -6y] = 4(7 + -1y) + -7

Combine like terms: 4 + 2 = 6
-2[6 + 4y + -6y] = 4(7 + -1y) + -7

Combine like terms: 4y + -6y = -2y
-2[6 + -2y] = 4(7 + -1y) + -7
[6 * -2 + -2y * -2] = 4(7 + -1y) + -7
[-12 + 4y] = 4(7 + -1y) + -7
-12 + 4y = (7 * 4 + -1y * 4) + -7
-12 + 4y = (28 + -4y) + -7

Reorder the terms:
-12 + 4y = 28 + -7 + -4y

Combine like terms: 28 + -7 = 21
-12 + 4y = 21 + -4y

Solving
-12 + 4y = 21 + -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.
-12 + 4y + 4y = 21 + -4y + 4y

Combine like terms: 4y + 4y = 8y
-12 + 8y = 21 + -4y + 4y

Combine like terms: -4y + 4y = 0
-12 + 8y = 21 + 0
-12 + 8y = 21

Add '12' to each side of the equation.
-12 + 12 + 8y = 21 + 12

Combine like terms: -12 + 12 = 0
0 + 8y = 21 + 12
8y = 21 + 12

Combine like terms: 21 + 12 = 33
8y = 33

Divide each side by '8'.
y = 4.125

Simplifying
y = 4.125

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