Question
Find the value of 1 unit.
  1. 3 u + 100 = 400
  2. 100 + 3 u = 400
  3. 3 u - 20 = 280
  4. 280 = 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. 3 u + 100 = 400
  2. 100 + 3 u = 400
  3. 3 u - 20 = 280
  4. 280 = 3 u - 20