Question
Find the value of 1 unit.
  1. 5 u + 80 = 430
  2. 80 + 5 u = 430
  3. 4 u - 40 = 40
  4. 40 = 4 u - 40
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. 5 u + 80 = 430
  2. 80 + 5 u = 430
  3. 4 u - 40 = 40
  4. 40 = 4 u - 40