30-(11+(18-(48/8×2))+7)+15
= 30-(11+(18-12)+7)+15
= 30-(11+6+7)+15
= 30-24+15
= 21

Step-by-step explanation:

3 *4 12 have
- =
7 *4 28 total
28-12=16
Answer:
im reallly sorry
Step-by-step explanation:
Answer:
74.5
Step-by-step explanation:
i did it on my calculator and it says it is 74.5.