(1,25+1/6)×2,4= (5,4-2целая 1/3)÷7ц 2/3= (2ц 1/3+0,25)×0,12= (7,6-4ц 3/4)÷1,9=

(1,25+1/6)×2,4=(125/100+1/6)×2,4=(375+50/300)×2,4=425/300×24/10=85×4/50×2=340/100=3,4

(54/10-7/3)÷23/3=(162-70/30)÷23/3=92/30÷23/3=92/30×3/23=4/10=0,4

(7/3+25/100)×0,12=(700+75/300)×12/100=775/300×12/100=31/100=0,31

(7,6-4,75)÷1,9=2,85÷1,9=1,5