Question
Find the value of 1 unit.
  1. 9 u + 20 = 290
  2. 20 + 9 u = 290
  3. 8 u - 10 = 550
  4. 550 = 8 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. 9 u + 20 = 290
  2. 20 + 9 u = 290
  3. 8 u - 10 = 550
  4. 550 = 8 u - 10