3(y-4)-8=-4(-5y+9)-7y

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Solution for 3(y-4)-8=-4(-5y+9)-7y equation:


Simplifying
3(y + -4) + -8 = -4(-5y + 9) + -7y

Reorder the terms:
3(-4 + y) + -8 = -4(-5y + 9) + -7y
(-4 * 3 + y * 3) + -8 = -4(-5y + 9) + -7y
(-12 + 3y) + -8 = -4(-5y + 9) + -7y

Reorder the terms:
-12 + -8 + 3y = -4(-5y + 9) + -7y

Combine like terms: -12 + -8 = -20
-20 + 3y = -4(-5y + 9) + -7y

Reorder the terms:
-20 + 3y = -4(9 + -5y) + -7y
-20 + 3y = (9 * -4 + -5y * -4) + -7y
-20 + 3y = (-36 + 20y) + -7y

Combine like terms: 20y + -7y = 13y
-20 + 3y = -36 + 13y

Solving
-20 + 3y = -36 + 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.
-20 + 3y + -13y = -36 + 13y + -13y

Combine like terms: 3y + -13y = -10y
-20 + -10y = -36 + 13y + -13y

Combine like terms: 13y + -13y = 0
-20 + -10y = -36 + 0
-20 + -10y = -36

Add '20' to each side of the equation.
-20 + 20 + -10y = -36 + 20

Combine like terms: -20 + 20 = 0
0 + -10y = -36 + 20
-10y = -36 + 20

Combine like terms: -36 + 20 = -16
-10y = -16

Divide each side by '-10'.
y = 1.6

Simplifying
y = 1.6

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