Question
Find the value of 1 unit.
  1. 8 u + 30 = 510
  2. 30 + 8 u = 510
  3. 6 u - 20 = 40
  4. 40 = 6 u - 20
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 + 30 = 510
  2. 30 + 8 u = 510
  3. 6 u - 20 = 40
  4. 40 = 6 u - 20