Answer:
b,f
Step-by-step explanation:
b: if sandi scored 3 more points than randi, then sandis points are equal to 3+randi
f: so the equation is 3+r=s,
so input values
3+r=18
r=18-3
r=15
Omg I wish I could help I am not in this top level ♂️
Answer:
14 kg,35hg,500g,50mg.....
.....
If 20-2.3=17.7, then if you add 17.7 to 2.3. it equals 20 which is called the communicative property because whatever you add or subtract, the answer is the same
17.7+2.3=2.3+17.7