3 Emma, Steve, Maria, and George are comparing the solution of a math assignment problem below.
3
21
12 + 21
Select the student who correctly subtracted the rational expressions.
Emma:
Steve:
3
( - 1)(+3)
1) (1 + 3)
1(r + 3) + 3
1(+ 3) - 3
(1 - 1)(1 + 3)
(1 - 1) (3 + 3)
I + 6
(1 - 1)(+ + 3)
(1 - 1)(+ 3)
5
1
1
11
1
II
=
Maria:
George:
3
(1 - 1)(1 + 3)
1
1-3
2 + 3
1
1
1
11
-
-2
I + 3
IL
-12 2012
A.
Emma
B.
Steve