Question

Oblicz pamiętając o skracaniu:

a) 3/8x6:4 b)2/5:4x7 c)18x5/12:15 d)1 1/9x3:11 e)2 4/5:7x8 f)6x3 1/3:5

Answer 1

a) 3/8 * 6 : 4 = 3/4 * 3 : 4 = 9/4 * 1/4  = 9/16 

 

b) 2/5 : 4 *7 = 2/5 * 1/4 *7 = 1/5 * 1/2 * 7= 1/10 * 7 = 7/10

 

c)  18*5/12 : 15 = 6 *5/4 *1/15 = 30/4 *1/15= 2/4 *1 = 2/4=1/2

 

d) 1i1/9 *3 : 11= 10/9 *3 : 11 = 10/3 *1 : 11= 10/3 * 1/11= 10/33

 

e) 2i4/5 ;7 *8=  14/5 * 1/7 *8 = 2/5 *1/1 *8 = 2/5 *8= 16/5 = 3i1/5

 

f) 6 *3i1/3 : 5 = 6 * 10/3 : 5 = 2 * 10/1 *1/5 = 20/1 * 1/5 = 20/5 = 4