Question
Find the value of 1 unit.
  1. 7 u + 70 = 280
  2. 70 + 7 u = 280
  3. 5 u - 100 = 250
  4. 250 = 5 u - 100
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. 7 u + 70 = 280
  2. 70 + 7 u = 280
  3. 5 u - 100 = 250
  4. 250 = 5 u - 100