-7=-5y+(-y+9)-7(7+3y)

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Solution for -7=-5y+(-y+9)-7(7+3y) equation:


Simplifying
-7 = -5y + (-1y + 9) + -7(7 + 3y)

Reorder the terms:
-7 = -5y + (9 + -1y) + -7(7 + 3y)

Remove parenthesis around (9 + -1y)
-7 = -5y + 9 + -1y + -7(7 + 3y)
-7 = -5y + 9 + -1y + (7 * -7 + 3y * -7)
-7 = -5y + 9 + -1y + (-49 + -21y)

Reorder the terms:
-7 = 9 + -49 + -5y + -1y + -21y

Combine like terms: 9 + -49 = -40
-7 = -40 + -5y + -1y + -21y

Combine like terms: -5y + -1y = -6y
-7 = -40 + -6y + -21y

Combine like terms: -6y + -21y = -27y
-7 = -40 + -27y

Solving
-7 = -40 + -27y

Solving for variable 'y'.

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

Add '27y' to each side of the equation.
-7 + 27y = -40 + -27y + 27y

Combine like terms: -27y + 27y = 0
-7 + 27y = -40 + 0
-7 + 27y = -40

Add '7' to each side of the equation.
-7 + 7 + 27y = -40 + 7

Combine like terms: -7 + 7 = 0
0 + 27y = -40 + 7
27y = -40 + 7

Combine like terms: -40 + 7 = -33
27y = -33

Divide each side by '27'.
y = -1.222222222

Simplifying
y = -1.222222222

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