Question
Find the value of 1 unit.
  1. 9 u + 60 = 240
  2. 60 + 9 u = 240
  3. 7 u - 70 = 490
  4. 490 = 7 u - 70
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 + 60 = 240
  2. 60 + 9 u = 240
  3. 7 u - 70 = 490
  4. 490 = 7 u - 70