3. ...............= - 2 1/2
1) 4 1/12 * 4/7=49/12 * 4/7=7/3=2 1/3
2) 2 1/12 - 2 1/3=2 1/12 - 2 4/12= - 3/12= - 1/4
3) 5/8 : ( -1/4)= - 5/8 * 4= - 5/2= - 2 1/2= - 2,5
4. ...............=1/30
1) - 5/6 * 4/15= - 2/15
2) - 2/15 - 2/15= - 4/15
3) - 4/15 : ( -8)=4/15 * 1/8=1/30
5. ..............= - 1/2 = - 0,5
1) -22/45 : 4/5= - 22/45 * 5/4= - 11/18
2) 5/72 : ( -5/6)= - 5/72 * 6/5= - 1/12
3) - 11/18 +( -1/12)= - 2/36 - 3/36= - 5/36
4) - 5/36 * 3,6= - 5/36 * 36/10= - 1/2= -0,5
6. ....................= -0,32
1) - 33/35 : 6/7= - 33/35 * 7/6= - 11/10= - 1 1/10
2) 7/36 : (-5/6)= - 7/36 * 6/5= - 7/30
3) - 1 1/10+( -7/30)= - 1 3/30 - 7/30= - 8/30= - 4/15
4) - 4/15 * 1,2= - 4/15 * 6/5= - 8/25= - 0,32
7. ................=0,1
1) 1 1/4 * 0,24=1,25 *0,24=0,3
2) 3 1/3 - 0,3=3 1/3 - 3/10=3 10/30 - 9/30=3 1/30
3) - 0,91 : 3 1/30= - 91/100 * 30/91= - 30/100= - 3/10= - 0,3
4) -0,3+0,4=0,1
8. ..................= - 3/8
1) 1 2/3 * 0,75=5/3 * 3/4=5/4=1 1/4
2) 2 1/3 - 1 1/4=2 4/12 - 1 3/12=1 1/12
3) 1 1/12 : ( -4 1/3)= - 13/12 * 3/13= - 3/12= - 1/4
4) - 1/4 - 1/8= - 2/8 - 1/8= - 3/8
