Question
Find the value of 1 unit.
  1. 1 u - 5 = 4
  2. 5 = 1 u - 4
  3. 7 - 6 = 1 u - 5
  4. 6 + 7 = 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 - 5 = 4
  2. 5 = 1 u - 4
  3. 7 - 6 = 1 u - 5
  4. 6 + 7 = 1 u - 6