6/12 x 2/10=
12/120
4+2=
6
7x4=
28
1/16 x 7/21=
7/336
10+(-3)=
7
9x(-5)=
-45
8/9 x 1/2=
8/18
(-5)+(-4)=
-9
(-6)x(-2)=
12
11/20 x 4/14=
44/280
8-5=
3
63÷7=
9
7/18 x 11/25=
77/450
(-4)-2=
-6
28÷(-4)=
-7