I think this is right
5x-2+x=9+3x+10
6x-2=19+3x
+2 +2
6x=21+3x
-3x -3x
3x=21
3x/3=21/3
X=7
If you know how to do algebra this should make sense
12by8=1.5 4by3=1.3 1.5by1.3=1.12
Nine days. You can divide 108 by 36, to get how many times she has to read 36 pages, which is 3. Then you multiply that by 3, because she uses 3days for every 36 pages. 3x3=9