Вычислите 3/2 : 6/7 -1
1)3/2 : 6/7=3/2 x 7/6=3/2 x 7/3x2=1/2x7/2= 1x7/2x2=7/4 3+1x4/4= 1 3/4 2)1 3/4 - 1 = 3/4