Question

Oblicz.Proszę o pomoc :) (szybko)

2/3+0,77=
15,4+ 3,1/3=
8,3/4+1,125=
1,75-5/6=
3,1/5-2,25=
6,8-5,1/4=
6,4x5/8=
2,15x0,75=
1,3/7x0,056=
2,4:1,3/5=
3,3/4:0,05=
2,5/6:3,4=
/=kreska ułamkowa

Answer 1

2/3+0,77=2/3+77/100= 200/300+231/300=431/300
15,4+ 3,1/3=154/10+ 10/3= 462/30+ 100/30= 562/30= 18 11/15
8,3/4+1,125=35/4+1 125/1000= 8750/1000+ 1 125/1000= 8 7/8
1,75-5/6= 175/100- 5/6= 7/4-5/6= 21/12- 10/12= 11/12
3,1/5-2,25=16/5- 225/100= 16/5-9/4= 64/20-45/20= 19/20
6,8-5,1/4=68/10- 21/4= 680/100- 525/100= 155/100= 31/20
6,4x5/8=64/10* 5/8= 8/2= 4
2,15x0,75=215/100*75/100= 129/80
1,3/7x0,056=10/7* 56/1000= 56/700= 2/25= 0,08
2,4:1,3/5=24/10*5/8= 3/2
3,3/4:0,05=15/4: 5/100= 15/4* 100/5= 75
2,5/6:3,4=17/6: 34/10= 17/6* 10/34= 5/6