Answer:
can you explan it more
Step-by-step explanation:
Answer:
0
Step-by-step explanation:




Answer:
b + b + 7 = 23
2b + 7 = 23
Step-by-step explanation:
b = girls
b + 7 = boys
Answer:
plus and minus
Step-by-step explanation:
example : 3 ± 5 = 8 or -2