Question
Find the value of 1 unit.
  1. 8 u + 80 = 720
  2. 80 + 8 u = 720
  3. 4 u - 80 = 320
  4. 320 = 4 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. 8 u + 80 = 720
  2. 80 + 8 u = 720
  3. 4 u - 80 = 320
  4. 320 = 4 u - 80