Answer:
C. 2 -2 -3
Step-by-step explanation:
this is a combination of indicated operations
the number on the left of the indicated operation is the original set
the number '1/4' next to R shows that you need to multiply certain numbers by 1/4
the subscript on the R's shows which row the multiplication needs to be done on...
in this case it is saying that 1/4 [tex]R_{2}[/tex] + [tex]R_{1}[/tex] will become the new
so multiply 1/4 by a number in the row [tex]R_{2}[/tex] and then add that to the corresponding number from [tex]R_{1}[/tex]
an example: (1/4 x 8) + 0 -------> 2
2 would be the new first number in the second row
