(y-7)=4-(y-7)

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


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

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

Remove parenthesis around (-7 + y)
-7 + y = 4 + -1(y + -7)

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

Combine like terms: 4 + 7 = 11
-7 + y = 11 + -1y

Solving
-7 + y = 11 + -1y

Solving for variable 'y'.

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

Add 'y' to each side of the equation.
-7 + y + y = 11 + -1y + y

Combine like terms: y + y = 2y
-7 + 2y = 11 + -1y + y

Combine like terms: -1y + y = 0
-7 + 2y = 11 + 0
-7 + 2y = 11

Add '7' to each side of the equation.
-7 + 7 + 2y = 11 + 7

Combine like terms: -7 + 7 = 0
0 + 2y = 11 + 7
2y = 11 + 7

Combine like terms: 11 + 7 = 18
2y = 18

Divide each side by '2'.
y = 9

Simplifying
y = 9

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