Question

Pomocy z matmy ułamki :{ a) 5-3/2 * 1/2 = b) 1 5/12 : 1/2 - 2 1/2 = c) 1 1/9 * 2 2/5 + 2 d) 6 3/5 : 3 2/3 - 1 1/2 =

Answer 1

a) 5-3/2 * 1/2 = 5 - 3/4 = 4 1/4

 

b) 1 5/12 : 1/2 - 2 1/2 = 17/12 * 2 - 5/2 = 34/12 - 5/2 = 17/6 - 15/6 = 2/6 = 1/3

 

c) 1 1/9 * 2 2/5 + 2 = 10/9 * 12/5 + 2 = (skracamy 10 i 5 przez 5 oraz 12 i  przez 3) 2*4+2 = 8+2 = 10

 

d) 6 3/5 : 3 2/3 - 1 1/2 = 33/5:11/3-3/2 = 33/5*3/11-3/2 (skracamy 33 i 11 przez 11) 3/5*3-3/2 = 9/5-3/2 = 18/10-15/10 = 3/10

Answer 2

a) 5/2-3/4= 10/4-3/4=7/4

b)17/12 * 2/1 - 5/2= 17/6 - 15/6=2/6=1/3

c)2/9 *12/1+2/1= 8/3+6/3=14/3

d) 33/5 * 3/11 - 3/2= 9/5-3/2= 18/10 - 15/10=3/10