Ответ:
1) -z-x*(-y)=-xyz
2) -3*(-13)*(-4a)/50=-78a/25
3) -5r-3n/7*(-2/2m)=-15mnr/7
4) -d-c-a*(-b)=abcd
5) (-4)y*5(-4(-3)/5)=-48*0*x*y=-48xy
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Ответ:
1) -z-x*(-y)=-xyz
2) -3*(-13)*(-4a)/50=-78a/25
3) -5r-3n/7*(-2/2m)=-15mnr/7
4) -d-c-a*(-b)=abcd
5) (-4)y*5(-4(-3)/5)=-48*0*x*y=-48xy