Question
Find the value of 1 unit.
  1. 9 u + 20 = 650
  2. 20 + 9 u = 650
  3. 3 u - 50 = 190
  4. 190 = 3 u - 50
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 = 650
  2. 20 + 9 u = 650
  3. 3 u - 50 = 190
  4. 190 = 3 u - 50