Question
Find the value of 1 unit.
  1. 2 u + 100 = 120
  2. 100 + 2 u = 120
  3. 2 u - 20 = 40
  4. 40 = 2 u - 20
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. 2 u + 100 = 120
  2. 100 + 2 u = 120
  3. 2 u - 20 = 40
  4. 40 = 2 u - 20