2(y-1)-y=4

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Solution for 2(y-1)-y=4 equation: 


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

Reorder the terms:
2(-1 + y) + -1y = 4
(-1 * 2 + y * 2) + -1y = 4
(-2 + 2y) + -1y = 4

Combine like terms: 2y + -1y = 1y
-2 + 1y = 4

Solving
-2 + 1y = 4

Solving for variable 'y'.

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

Add '2' to each side of the equation.
-2 + 2 + 1y = 4 + 2

Combine like terms: -2 + 2 = 0
0 + 1y = 4 + 2
1y = 4 + 2

Combine like terms: 4 + 2 = 6
1y = 6

Divide each side by '1'.
y = 6

Simplifying
y = 6

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