Question

Calcule 1 1/2+ 2- 9/10

Answer 1

11/2+2-9/10
(22+10-18)/5
14/5

Answer 2

11/2+2-9/10

2,10 | 2
1, 5. |. 5
1, 1
m.m.c(2,10)=2*5=10

55+20-9/10

75-9/10
66/10
33/5