Question
Find the value of 1 unit.
  1. 9 u - 40 = 4 u + 20
  2. 4 u + 20 = 9 u - 40
  3. 4 u - 20 = 2 u + 40
  4. 2 u + 40 = 4 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. 9 u - 40 = 4 u + 20
  2. 4 u + 20 = 9 u - 40
  3. 4 u - 20 = 2 u + 40
  4. 2 u + 40 = 4 u - 20