18 делить на 9 = 2
18 : 9 = 2
1) (4,4 - 4,15 + 1 7/15 + 7/60) : 3 2/3 = (0,25 + 22/15 + 7/60) : 11/3 = (25/100 + 22/15 + 7/60) : 11/3 = (75+440+35)/300 : 11/3 = 550/300 * 3/11 = 50/100 = 1/2 = 0,5
2) (3 1/2 - 2,75) : 0,2 - 2 1/2 = (7/2 - 275/100) : 2/10 - 5/2 = (350-275)/100 : 2/10 - 5/2 = 75/100 * 10/2 - 5/2 = 75/20 - 5/2 = (75-50)/20 = 25/20 = 1 5/20 = 1 1/4 = 1,25
1) 6p-6c=6*(p-c)
2) 5am-8=5*(am-1,6)
3) 14ad+35bc=7*(2ad+5bc)