Question
Find the value of 1 unit.
  1. 9 u + 80 = 170
  2. 80 + 9 u = 170
  3. 3 u - 80 = 40
  4. 40 = 3 u - 80
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 + 80 = 170
  2. 80 + 9 u = 170
  3. 3 u - 80 = 40
  4. 40 = 3 u - 80