Question
Find the value of 1 unit.
  1. 3 u + 30 = 180
  2. 30 + 3 u = 180
  3. 9 u - 20 = 250
  4. 250 = 9 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. 3 u + 30 = 180
  2. 30 + 3 u = 180
  3. 9 u - 20 = 250
  4. 250 = 9 u - 20