Question
Find the value of 1 unit.
  1. 2 u + 100 = 200
  2. 100 + 2 u = 200
  3. 9 u - 90 = 630
  4. 630 = 9 u - 90
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. 2 u + 100 = 200
  2. 100 + 2 u = 200
  3. 9 u - 90 = 630
  4. 630 = 9 u - 90