-7=-5y+4(-y+9)-7+3y

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Solution for -7=-5y+4(-y+9)-7+3y equation:


Simplifying
-7 = -5y + 4(-1y + 9) + -7 + 3y

Reorder the terms:
-7 = -5y + 4(9 + -1y) + -7 + 3y
-7 = -5y + (9 * 4 + -1y * 4) + -7 + 3y
-7 = -5y + (36 + -4y) + -7 + 3y

Reorder the terms:
-7 = 36 + -7 + -5y + -4y + 3y

Combine like terms: 36 + -7 = 29
-7 = 29 + -5y + -4y + 3y

Combine like terms: -5y + -4y = -9y
-7 = 29 + -9y + 3y

Combine like terms: -9y + 3y = -6y
-7 = 29 + -6y

Solving
-7 = 29 + -6y

Solving for variable 'y'.

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

Add '6y' to each side of the equation.
-7 + 6y = 29 + -6y + 6y

Combine like terms: -6y + 6y = 0
-7 + 6y = 29 + 0
-7 + 6y = 29

Add '7' to each side of the equation.
-7 + 7 + 6y = 29 + 7

Combine like terms: -7 + 7 = 0
0 + 6y = 29 + 7
6y = 29 + 7

Combine like terms: 29 + 7 = 36
6y = 36

Divide each side by '6'.
y = 6

Simplifying
y = 6

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