20-[4+8y-3(y+4)]=-4(4y-7)-[5(y-1)-11y+15]

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Solution for 20-[4+8y-3(y+4)]=-4(4y-7)-[5(y-1)-11y+15] equation:


Simplifying
20 + -1[4 + 8y + -3(y + 4)] = -4(4y + -7) + -1[5(y + -1) + -11y + 15]

Reorder the terms:
20 + -1[4 + 8y + -3(4 + y)] = -4(4y + -7) + -1[5(y + -1) + -11y + 15]
20 + -1[4 + 8y + (4 * -3 + y * -3)] = -4(4y + -7) + -1[5(y + -1) + -11y + 15]
20 + -1[4 + 8y + (-12 + -3y)] = -4(4y + -7) + -1[5(y + -1) + -11y + 15]

Reorder the terms:
20 + -1[4 + -12 + 8y + -3y] = -4(4y + -7) + -1[5(y + -1) + -11y + 15]

Combine like terms: 4 + -12 = -8
20 + -1[-8 + 8y + -3y] = -4(4y + -7) + -1[5(y + -1) + -11y + 15]

Combine like terms: 8y + -3y = 5y
20 + -1[-8 + 5y] = -4(4y + -7) + -1[5(y + -1) + -11y + 15]
20 + [-8 * -1 + 5y * -1] = -4(4y + -7) + -1[5(y + -1) + -11y + 15]
20 + [8 + -5y] = -4(4y + -7) + -1[5(y + -1) + -11y + 15]

Combine like terms: 20 + 8 = 28
28 + -5y = -4(4y + -7) + -1[5(y + -1) + -11y + 15]

Reorder the terms:
28 + -5y = -4(-7 + 4y) + -1[5(y + -1) + -11y + 15]
28 + -5y = (-7 * -4 + 4y * -4) + -1[5(y + -1) + -11y + 15]
28 + -5y = (28 + -16y) + -1[5(y + -1) + -11y + 15]

Reorder the terms:
28 + -5y = 28 + -16y + -1[5(-1 + y) + -11y + 15]
28 + -5y = 28 + -16y + -1[(-1 * 5 + y * 5) + -11y + 15]
28 + -5y = 28 + -16y + -1[(-5 + 5y) + -11y + 15]

Reorder the terms:
28 + -5y = 28 + -16y + -1[-5 + 15 + 5y + -11y]

Combine like terms: -5 + 15 = 10
28 + -5y = 28 + -16y + -1[10 + 5y + -11y]

Combine like terms: 5y + -11y = -6y
28 + -5y = 28 + -16y + -1[10 + -6y]
28 + -5y = 28 + -16y + [10 * -1 + -6y * -1]
28 + -5y = 28 + -16y + [-10 + 6y]

Reorder the terms:
28 + -5y = 28 + -10 + -16y + 6y

Combine like terms: 28 + -10 = 18
28 + -5y = 18 + -16y + 6y

Combine like terms: -16y + 6y = -10y
28 + -5y = 18 + -10y

Solving
28 + -5y = 18 + -10y

Solving for variable 'y'.

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

Add '10y' to each side of the equation.
28 + -5y + 10y = 18 + -10y + 10y

Combine like terms: -5y + 10y = 5y
28 + 5y = 18 + -10y + 10y

Combine like terms: -10y + 10y = 0
28 + 5y = 18 + 0
28 + 5y = 18

Add '-28' to each side of the equation.
28 + -28 + 5y = 18 + -28

Combine like terms: 28 + -28 = 0
0 + 5y = 18 + -28
5y = 18 + -28

Combine like terms: 18 + -28 = -10
5y = -10

Divide each side by '5'.
y = -2

Simplifying
y = -2

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