Add/Subtract integers
Add 15 and -9
6
4/7
0.57
-10 * 9
-90
Add -15 and 8
-7
2/5
o.4
-7*-9
63
9-(-9)
18
4/15
0.26666666666.......
-8* 9
-72
(-6)-(-9)
3
6/8
0.75
1/6*-3/4
-3/24 or -1/8
-16-(7)
-9
5/25
0.2
1 and 3/4 * 4 and 3/5
161/20