.
24mn – 3m + 40n – 5=3m(8n –1)+5*(8n –1)=(8n –1)*(3m+5); 2 2/3=8/3
(8*0.2 –1)*(3*(-8/3)+5)=0.6*(-3)=-1.8;
*(-8/3)*0.2-3*(-8/3)+40*0.2-5=-12.8+8+8-5=11-12.8=-1.8
.
24mn – 3m + 40n – 5=3m(8n –1)+5*(8n –1)=(8n –1)*(3m+5); 2 2/3=8/3
(8*0.2 –1)*(3*(-8/3)+5)=0.6*(-3)=-1.8;
.
*(-8/3)*0.2-3*(-8/3)+40*0.2-5=-12.8+8+8-5=11-12.8=-1.8