Question
5 R + 2 S = 31
6 R + 3 S = 39

Fill in the blanks.
  1. 1 R = _____
  2. 1 S = _____
  3. 4 R + 2 S = _____



4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

(c)

Click button first when a symbol is required. X

5 R + 2 S = 31
6 R + 3 S = 39

Fill in the blanks.
  1. 1 R = _____
  2. 1 S = _____
  3. 4 R + 2 S = _____