1) 7.5*(-3,6)ab=27ab=27*(-24)*(-7)=-648*(-7)=4536
2)0.81*(-m)*3.5*(-n)=2.835*(-2.4)*6.4=-6.804*6.4=-43.5456
1) 7.5*(-3,6)ab=27ab=27*(-24)*(-7)=-648*(-7)=4536
2)0.81*(-m)*3.5*(-n)=2.835*(-2.4)*6.4=-6.804*6.4=-43.5456