Question

Oblicz 3 3\7 + 2 2\9
0,8 +37
4 1\3 - 2 2\5
7,2 - 3,8
3 3\4 x 2 1\5
0,3 x 1,5
2 2\5 : 5 1/7
5,6 : 0,08

Answer 1

•3 i 3/7+ 2 i 2/9=24/9=216/63+180/63=36/63
•0,8+37=37,8
•4 i 1/3- 2 i 2/5=13/3-12/5=65/15-36/15=29/15=1 i 14/15
•7,2-3,8=3,4
•3 i 3/4*2 i 1/5=15/4*11/5=33/4=8 i 1/4
•0,3*1,5=3/10*1 i 5/10=3/10*15/10=45/10=4 i 1/2
•2 i 2/5: 5 i 1/7=12/5:36/7=12/5*7/36=7/15
•5,6:0,08=5 i 6/10:8/100=56/10*100/8=70/1=70