1) (1 3/5+1,8)*1/2=(8/5+9/5)*1/2=17/5*1/2=10/17
2) (6-4 8/15):2,2=(6-68/15):11/5=22/15*5/11=2/3
3) (1,25+1/6)*2,4=(5/4+1/6)*12/5=17/12*12/5=17*1/5=17/5
Пошаговое объяснение:
1) = (1,6 + 1,8) * 0,5 = 3,4 * 0,5 = 1,7
2) = (5 15/15 - 4 8/15) : 22/10 = 1 7/15 : 22/10 = 22/15 * 10/22 = 2/3
3) = (1 1/4 + 1/6) * 24/10 = (1 3/12 + 2/12) * 12/5 = 1 5/12 * 12/5 = 17/12 * 12/5 = 17/5 = 3 2/5 = 3,4
