Answer:
x=29
Step-by-step explanation:
x is 29.
x-21=8 (same equation to solve)
+21 +21 (add 21 to both sides)
-------------
x= 29
idk
$24
You simply do $42-$18
=24
I'm not sure if there is enough information here. If you are asking how many books or bookmarks she can buy, you'll need a total amount of money :).
12mlies
just add 7 + 5 and boom you have you answer
