45/81=5/9
72/60=12/10=1 2/10=1 1/5
<span>187/510=11/30</span>
-3+10=7
8+(-16)=8-16=-8
-3+(-9)=-3-9=-12
0-11=-11
14-(-2)=14+2=16
-5-4=-9
-18*(-7)=126
2*(-11)=-22
-4*4=-16
0/(-3)=0
-28/(-7)=4
-15/3=-5
-12-(+7)-(-4)=-12-7+4=-15
(-10)*(+8)*(-3)=-80*(-3)=240
-20/(14+6*(-3))=-20:(14+(-18))=-20:(-4)=5
<span>(-10)*(-1)*(-1)*(-1)*(-1)*(-1)*(-1)=-10</span>