Сократить дробь 4*9/12*3, 15*7/21*100, 144*63/84*60, 12*10-12*7/6*9, 16*21*48/8*63*64

Question

Сократить дробь 4*9/12*3, 15*7/21*100, 144*63/84*60, 12*10-12*7/6*9, 16*21*48/8*63*64

Answer 1

4*9/12*3 = 9
15*7/21*100 = 500
144*63/84*60 =6480
12*10 - 12*7/6*9 = 12*10-12*7*3/2 = 12(10 - 7*3/2) = 12*(10 - 10,5 ) = - 6
16 * 21 *48 / 8 *63 *64 = 3/2=1,5 

Answer 2

3/4, 1/20, 9/5 или 1 целая 4/5, 3 целых 7/9, 1/4.