5y-[6-2(y+4)]=9y+18

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Solution for 5y-[6-2(y+4)]=9y+18 equation:


Simplifying
5y + -1[6 + -2(y + 4)] = 9y + 18

Reorder the terms:
5y + -1[6 + -2(4 + y)] = 9y + 18
5y + -1[6 + (4 * -2 + y * -2)] = 9y + 18
5y + -1[6 + (-8 + -2y)] = 9y + 18

Combine like terms: 6 + -8 = -2
5y + -1[-2 + -2y] = 9y + 18
5y + [-2 * -1 + -2y * -1] = 9y + 18
5y + [2 + 2y] = 9y + 18

Reorder the terms:
2 + 5y + 2y = 9y + 18

Combine like terms: 5y + 2y = 7y
2 + 7y = 9y + 18

Reorder the terms:
2 + 7y = 18 + 9y

Solving
2 + 7y = 18 + 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
2 + 7y + -9y = 18 + 9y + -9y

Combine like terms: 7y + -9y = -2y
2 + -2y = 18 + 9y + -9y

Combine like terms: 9y + -9y = 0
2 + -2y = 18 + 0
2 + -2y = 18

Add '-2' to each side of the equation.
2 + -2 + -2y = 18 + -2

Combine like terms: 2 + -2 = 0
0 + -2y = 18 + -2
-2y = 18 + -2

Combine like terms: 18 + -2 = 16
-2y = 16

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

Simplifying
y = -8

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