2(-2)-y=4

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


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

Multiply 2 * -2
-4 + -1y = 4

Solving
-4 + -1y = 4

Solving for variable 'y'.

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

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

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

Combine like terms: 4 + 4 = 8
-1y = 8

Divide each side by '-1'.
y = -8

Simplifying
y = -8

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