Вычислите: 25,2: 3 1/2+(6-4 1/3)х0,6. (7-1 5/12): - вопрос №58706462523126413067151267575316155 от jimjimkim 20.09.2022 22:35

Question

Математика: Вычислите: 25,2: 3 1/2+(6-4 1/3)х0,6. (7-1 5/12): 6,7+()5,75-3 1/6): 15,5

jimjimkim · Answer

25,2:3 1/2+(6-4 1/3)х0,6=25,2:3,5+(2- 1/3)х6/10=7,2+5/3*6/10=7,2+2/2=7,2+1=8,2
(7-1 5/12):6,7+()5,75-3 1/6):15,5=5 7/12:67/10+2 1/4-1/6:155/10=67/12*10/67+2 1/12*10/155=5/6+25/6*5/155=5/6+25/186=(930+30)/1116=960/1116=480/558=160/189