Question
Find the value of 1 unit.
  1. 5 u + 20 = 220
  2. 20 + 5 u = 220
  3. 8 u - 30 = 210
  4. 210 = 8 u - 30
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. 5 u + 20 = 220
  2. 20 + 5 u = 220
  3. 8 u - 30 = 210
  4. 210 = 8 u - 30