Question
Find the value of 1 unit.
  1. 6 u + 40 = 220
  2. 40 + 6 u = 220
  3. 2 u - 40 = 20
  4. 20 = 2 u - 40
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. 6 u + 40 = 220
  2. 40 + 6 u = 220
  3. 2 u - 40 = 20
  4. 20 = 2 u - 40