Answer:
I have no idea how to answer this... :P
<3
Sorry, I am quite a dummy.
Answer: 1) 15 - 7 2) 5+c 3) m-7 4) x+16=23 5) x+8 6) 10÷w=7 7) 17+x=557 8) $12-x=$48
Step-by-step explanation:
10/21 units²
2/3 x 5/7 = 10/21 units²
What boxes....
