Question

Oblicz:
-7 7/15- 2 9/20=
3 5/6-8 2/9=
-7,5*(-3 1/15)=
8 1/3:(-2 1/2)=
-6,39+7,2=
-7,58-75,82=
2,307*(-23,4)=

Answer 1

-7 7/15- 2 9/20= -7 28/60 -2 27/60= -9 55/60

3 5/6-8 2/9= 3 15/18 -8 4/18= 3 15/18 -7 22/18= -4 7/18

-7,5*(-3 1/15)= -7 5/10*(-3 1/15)= -75/10*(-46/15)= 1*23= 23

8 1/3:(-2 1/2)= 25/3:(-5/2)= 25/3*2/5= 10/3= 3 1/3

-6,39+7,2= 0,81

-7,58-75,82= -83,4

2,307*(-23,4)= -53,9838