Question
Find the value of 1 unit.
  1. 4 u + 20 = 140
  2. 20 + 4 u = 140
  3. 5 u - 50 = 50
  4. 50 = 5 u - 50
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. 4 u + 20 = 140
  2. 20 + 4 u = 140
  3. 5 u - 50 = 50
  4. 50 = 5 u - 50