-2*20+4y=-4

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Solution for -2*20+4y=-4 equation: 


Simplifying
-2 * 20 + 4y = -4

Multiply -2 * 20
-40 + 4y = -4

Solving
-40 + 4y = -4

Solving for variable 'y'.

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

Add '40' to each side of the equation.
-40 + 40 + 4y = -4 + 40

Combine like terms: -40 + 40 = 0
0 + 4y = -4 + 40
4y = -4 + 40

Combine like terms: -4 + 40 = 36
4y = 36

Divide each side by '4'.
y = 9

Simplifying
y = 9

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