12 3/10 * 2/3 = (12*10+3)/10 * 2/3 = 123/10 * 2/3 = (123*2)/(10*3)= (41*3*2)/(5*2*3)=41/5= 8 1/5=8 2/10 = 8,2.
12 3/10 * 2/3 = (12*10+3)/10 * 2/3 = 123/10 * 2/3 = (123*2)/(10*3)= (41*3*2)/(5*2*3)=41/5= 8 1/5=8 2/10 = 8,2.