21-[2+6y-2(y+5)]=-4(2y-3)-[9(y-1)-4y+10]

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Solution for 21-[2+6y-2(y+5)]=-4(2y-3)-[9(y-1)-4y+10] equation:


Simplifying
21 + -1[2 + 6y + -2(y + 5)] = -4(2y + -3) + -1[9(y + -1) + -4y + 10]

Reorder the terms:
21 + -1[2 + 6y + -2(5 + y)] = -4(2y + -3) + -1[9(y + -1) + -4y + 10]
21 + -1[2 + 6y + (5 * -2 + y * -2)] = -4(2y + -3) + -1[9(y + -1) + -4y + 10]
21 + -1[2 + 6y + (-10 + -2y)] = -4(2y + -3) + -1[9(y + -1) + -4y + 10]

Reorder the terms:
21 + -1[2 + -10 + 6y + -2y] = -4(2y + -3) + -1[9(y + -1) + -4y + 10]

Combine like terms: 2 + -10 = -8
21 + -1[-8 + 6y + -2y] = -4(2y + -3) + -1[9(y + -1) + -4y + 10]

Combine like terms: 6y + -2y = 4y
21 + -1[-8 + 4y] = -4(2y + -3) + -1[9(y + -1) + -4y + 10]
21 + [-8 * -1 + 4y * -1] = -4(2y + -3) + -1[9(y + -1) + -4y + 10]
21 + [8 + -4y] = -4(2y + -3) + -1[9(y + -1) + -4y + 10]

Combine like terms: 21 + 8 = 29
29 + -4y = -4(2y + -3) + -1[9(y + -1) + -4y + 10]

Reorder the terms:
29 + -4y = -4(-3 + 2y) + -1[9(y + -1) + -4y + 10]
29 + -4y = (-3 * -4 + 2y * -4) + -1[9(y + -1) + -4y + 10]
29 + -4y = (12 + -8y) + -1[9(y + -1) + -4y + 10]

Reorder the terms:
29 + -4y = 12 + -8y + -1[9(-1 + y) + -4y + 10]
29 + -4y = 12 + -8y + -1[(-1 * 9 + y * 9) + -4y + 10]
29 + -4y = 12 + -8y + -1[(-9 + 9y) + -4y + 10]

Reorder the terms:
29 + -4y = 12 + -8y + -1[-9 + 10 + 9y + -4y]

Combine like terms: -9 + 10 = 1
29 + -4y = 12 + -8y + -1[1 + 9y + -4y]

Combine like terms: 9y + -4y = 5y
29 + -4y = 12 + -8y + -1[1 + 5y]
29 + -4y = 12 + -8y + [1 * -1 + 5y * -1]
29 + -4y = 12 + -8y + [-1 + -5y]

Reorder the terms:
29 + -4y = 12 + -1 + -8y + -5y

Combine like terms: 12 + -1 = 11
29 + -4y = 11 + -8y + -5y

Combine like terms: -8y + -5y = -13y
29 + -4y = 11 + -13y

Solving
29 + -4y = 11 + -13y

Solving for variable 'y'.

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

Add '13y' to each side of the equation.
29 + -4y + 13y = 11 + -13y + 13y

Combine like terms: -4y + 13y = 9y
29 + 9y = 11 + -13y + 13y

Combine like terms: -13y + 13y = 0
29 + 9y = 11 + 0
29 + 9y = 11

Add '-29' to each side of the equation.
29 + -29 + 9y = 11 + -29

Combine like terms: 29 + -29 = 0
0 + 9y = 11 + -29
9y = 11 + -29

Combine like terms: 11 + -29 = -18
9y = -18

Divide each side by '9'.
y = -2

Simplifying
y = -2

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