(6,4 * 2_11/12 - 16) * 2,25 = 6
1 2 3
1) 6,4 * 2_11/12 = 64/10 * 35/12 = (64*35) / (10*12) = (8 * 7) / 3 = 56/3
2) 18_2/3 - 16 = 2_2/3 = 8/3
3) 8/3 * 2,25 = 8/3 * 225/100 = (8*225) / (3*100) = (8*75) / 100 = 6
Пошаговое объяснение:
а) 10*9/30*9= 1*9/9*3=1/3
б) 12*14*16/14*16*18=12*16/16*18=12/18=2/3
в) 14*15/21*20=2*3/3*4=2/4=1/2
г) 5*9/6*7*30=9/6*7*6=3/2*7*6=1/2*7*2=1/28