1.х-3+9/х+3
2.1/4(4у-2)+3/4(у+2)
3.13/(4х-2)-13/(4х+2)
4.-4
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1.х-3+9/х+3
2.1/4(4у-2)+3/4(у+2)
3.13/(4х-2)-13/(4х+2)
4.-4