Question
Find the value of 1 unit.
  1. 4 u + 40 = 320
  2. 40 + 4 u = 320
  3. 3 u - 20 = 190
  4. 190 = 3 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. 4 u + 40 = 320
  2. 40 + 4 u = 320
  3. 3 u - 20 = 190
  4. 190 = 3 u - 20