add or subtract the given expressions, simplifying each result and note the combined excluded values.
1. (x-2/x+2)+(1/x2 -4)-(x+2/2-x)
2. (x-3/x+3)-(1/x-3)+(x+2/3-x)
1. (x-2/x+2)+(1/x2 -4)-(x+2/2-x)= (3x)/2-2/x-3
2. (x-3/x+3)-(1/x-3)+(x+2/3-x)=x-4/x+20/3
