А)3/2 : 2=? б)1 4/5 : 4=? в)171 1/4 : 1=? г)2/3 : 3=? д)-17 1/2 : 7=? е) 1 3/7 : (-2)=?
А) 2
3/2 : 2 = 3/2 * 1/2 = 3/4 1 4/5 : 4 = 9/5 * 1/4 = 9/20 171 1/4 : 1 = 171 1/4 2/3 : 3 = 2/3 * 1/3 = 2/9 -17 1/2 : 7 = -35/2 * 1/7 = -35/14 = -2 1/2 = -2,5 1 3/7 : (-2) = 10/7 * (-1/2) = -5/7