Ответ:
1) =x-y-x/2y=-y/2y=-1.5
2) =a+5b-a+8b/13a=-13b/13a=-b/a
3) =3x+8y+12x-8y/5x³=15x/5x³=3/x²
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Ответ:
1) =x-y-x/2y=-y/2y=-1.5
2) =a+5b-a+8b/13a=-13b/13a=-b/a
3) =3x+8y+12x-8y/5x³=15x/5x³=3/x²