Question
Find the value of 1 unit.
  1. 2 u + 20 = 220
  2. 20 + 2 u = 220
  3. 3 u - 90 = 180
  4. 180 = 3 u - 90
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 + 20 = 220
  2. 20 + 2 u = 220
  3. 3 u - 90 = 180
  4. 180 = 3 u - 90