Brittany gets payed 2/3 per dog Ben walks for her . if Ben makes 4.50 filling in for Brittany, she gets to keep $3.75
(cross out the first 2 -- that becomes a 1 and the 2 in .25 becomes a 12 and you do 12-7)
2.25
-0.75
____
1.50
(.75+.75+.75=2.25)
2.25+2.25=4.50
4.50
-0.75
____
3.75
(cross the 4 out and make it 3 , cross the 5 out and make it 14 , cross the 0 put and make it 10. then subtract 5 from 10 , 7 from 14 , and you can't subtract the 3 from anything)