-1(2)-2y=4

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


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

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

Solving
-2 + -2y = 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 + -2y = 4 + 2

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

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

Divide each side by '-2'.
y = -3

Simplifying
y = -3

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