Ответ:
1086. 1) -12-15m+18n 2)7t-0.2z+12.5y 3)-0.31x+0.78y-0.96 4)-1.05xp+9py-0.75pz
1088. 1)14 2)5.25 3)-2.5 4)1
Пошаговое объяснение:
1086. 1)-3*4+(-3)*5m-3*(-6n)=-12-15m+18n
2)-0.2*(-14t)+(-0.2)*z-0.2*(-25y)=7t-0.2z+12.5y
3)0.1*(-3.1x)+0.1*7.8y-0.1*9.6=-0.31x+0.78y-0.96
4)-1.5p*0.7x-1.5p*(-0.6y)-1.5p*0.5z=-1.05xp+9py-0.75pz
1088. 1)9.38+10-5.38=14
2)-8.76+3.25+10.76=5.25
3)-6.19-1.5+5.19=-2.5
4)21.4-12.7-20.4+12.7=1