Four students solved the problem 4. The work of each student is shown on the table.
Wyatt
Caden
Emily
Sarah
2011
1x1-29 3x4=
1 1
X
2015
4 5
5 1
1
4
=
5
4
Who solved the problem correctly and why?
Wyatt, because he multiplied by the reciprocal of the first number.
Emily, because she multiplied both numerators and both denominators.
Caden, because he multiplied by the reciprocal of the second number.
Sarah, because she multiplied by the reciprocals of both numbers.