Question
Find the value of 1 unit.
  1. 4 u + 60 = 420
  2. 60 + 4 u = 420
  3. 4 u - 10 = 30
  4. 30 = 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. 4 u + 60 = 420
  2. 60 + 4 u = 420
  3. 4 u - 10 = 30
  4. 30 = 4 u - 10