Question
Find the value of 1 unit.
  1. 2 u + 40 = 60
  2. 40 + 2 u = 60
  3. 4 u - 10 = 390
  4. 390 = 4 u - 10
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. 2 u + 40 = 60
  2. 40 + 2 u = 60
  3. 4 u - 10 = 390
  4. 390 = 4 u - 10