
-3/7×5/9=-5/21
-3/8×4/5=+3/10
-9/10x-1/-2=-9/20
-7/2×4/-35=+2/5
-5/6×3/10=-1/4
-7/32×4/21=+1/24
-2/5x(-75/2)=+15/1=15
4/3x(-9/16)=-3/4
-18/5x(-4/81)=+8/45

-1/2×2/3=-1/3
3/4x(2/9)= -1/6
-4/5x(-10/3-)=+8/3
-1/7x(-3/4)=+3/28
2/5x(-3/4)=-3/10
-3/8×4/5= -3/10

-2:6= -2/6= -1/3
-5:15=-5/15= -1/3
-10:(-20)=10/20= 1/2
-4:(-16)=4/16= 1/4

1/3×2= -2/3
7x(-1/2)= -7/2
-4x(-1/6)=+4/6
25/28x(-14)= -25/2
-12x(-13/14)=+78/7









