90-2y=-4

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Solution for 90-2y=-4 equation: 


Simplifying
90 + -2y = -4

Solving
90 + -2y = -4

Solving for variable 'y'.

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

Add '-90' to each side of the equation.
90 + -90 + -2y = -4 + -90

Combine like terms: 90 + -90 = 0
0 + -2y = -4 + -90
-2y = -4 + -90

Combine like terms: -4 + -90 = -94
-2y = -94

Divide each side by '-2'.
y = 47

Simplifying
y = 47

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