Question
Find the value of 1 unit.
  1. 1 u - 9 = 1
  2. 5 = 1 u - 1
  3. 2 - 1 = 1 u - 9
  4. 10 + 8 = 1 u - 6
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

(d)

Click button first when a symbol is required. X

Find the value of 1 unit.
  1. 1 u - 9 = 1
  2. 5 = 1 u - 1
  3. 2 - 1 = 1 u - 9
  4. 10 + 8 = 1 u - 6