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

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


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

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

Combine like terms: 7 + 9 = 16
16 + -3y = 4 + -4y

Solving
16 + -3y = 4 + -4y

Solving for variable 'y'.

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

Add '4y' to each side of the equation.
16 + -3y + 4y = 4 + -4y + 4y

Combine like terms: -3y + 4y = 1y
16 + 1y = 4 + -4y + 4y

Combine like terms: -4y + 4y = 0
16 + 1y = 4 + 0
16 + 1y = 4

Add '-16' to each side of the equation.
16 + -16 + 1y = 4 + -16

Combine like terms: 16 + -16 = 0
0 + 1y = 4 + -16
1y = 4 + -16

Combine like terms: 4 + -16 = -12
1y = -12

Divide each side by '1'.
y = -12

Simplifying
y = -12

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