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y+2=2y+1
Variable y cannot be equal to any of the values -2,2 since division by zero is not defined. Multiply both sides of the equation by \left(y-2\right)\left(y+2\right), the least common multiple of y-2,y^{2}-4.
y+2-2y=1
Subtract 2y from both sides.
-y+2=1
Combine y and -2y to get -y.
-y=1-2
Subtract 2 from both sides.
-y=-1
Subtract 2 from 1 to get -1.
y=1
Multiply both sides by -1.