Question
2 D + 2 E = 20
5 D + 2 E = 23

Fill in the blanks.
  1. 3 D = _____
  2. 1 D =_____
  3. 1 E = _____
3 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

2 D + 2 E = 20
5 D + 2 E = 23

Fill in the blanks.
  1. 3 D = _____
  2. 1 D =_____
  3. 1 E = _____