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

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


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

Reorder the terms:
7(-4 + y) + -8 = -7(-4y + 4) + -9y
(-4 * 7 + y * 7) + -8 = -7(-4y + 4) + -9y
(-28 + 7y) + -8 = -7(-4y + 4) + -9y

Reorder the terms:
-28 + -8 + 7y = -7(-4y + 4) + -9y

Combine like terms: -28 + -8 = -36
-36 + 7y = -7(-4y + 4) + -9y

Reorder the terms:
-36 + 7y = -7(4 + -4y) + -9y
-36 + 7y = (4 * -7 + -4y * -7) + -9y
-36 + 7y = (-28 + 28y) + -9y

Combine like terms: 28y + -9y = 19y
-36 + 7y = -28 + 19y

Solving
-36 + 7y = -28 + 19y

Solving for variable 'y'.

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

Add '-19y' to each side of the equation.
-36 + 7y + -19y = -28 + 19y + -19y

Combine like terms: 7y + -19y = -12y
-36 + -12y = -28 + 19y + -19y

Combine like terms: 19y + -19y = 0
-36 + -12y = -28 + 0
-36 + -12y = -28

Add '36' to each side of the equation.
-36 + 36 + -12y = -28 + 36

Combine like terms: -36 + 36 = 0
0 + -12y = -28 + 36
-12y = -28 + 36

Combine like terms: -28 + 36 = 8
-12y = 8

Divide each side by '-12'.
y = -0.6666666667

Simplifying
y = -0.6666666667

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