Question

oblicz:

5 i 1/2 : (1 i 1/2 -2/5)+(1/6+3/4):19/24=

28 i 4/5 : 13 i 5/7+ 6 i 3/5: 2/3=

2 i 3/8:3/4 +24 i 7/9=

7 i 1/8 -157 i 4/5 :24=

Answer 1

5½ : (1½ - ⅖)+(1/6+¾):19/24=5½ : (1 i 2/10-4/10)+(2/12 + 9/12) : 19/24=

=5½ : 1 i 1/10+11/12 : 19/24=11/2:11/10+11/12:19/24=

=11/2 * 10/11+ 11/12*24/19=5+22/19=5+1 i 3/19=6 i 3/19

 

 

28 i 4/5 : 13 i 5/7+ 6 i 3/5: 2/3=144/5 : 96/7+33/5 : 2/3=144/5 * 7/96+33/5 * 3/2=

=18/5 *7/12+33/5 * 3/2=126/60+99/10=126/60+594/60=720/60=12

 

 

2 i 3/8:3/4 +24 i 7/9=19/8 : 3/4+24 i 7/9=19/8 *4/3 + 245 i 7/9=

=19/6+24 i 7/9=19/6+223/9=57/18+446/18=503/18=27 i 17/18

 

 

7 i 1/8 -157 i 4/5 :24=7 i 1/8- 789/5 : 24/1=7 i 1/8 - 789/5 * 1/24=

=7 i 1/8 -263/5*1/8=7 i 1/8-268/40=7 i 1/8 - 6 i 23/40=

=7 i 5/40-6 i 23/40=22/40