Question
Find the value of 1 unit.
  1. 2 u + 80 = 200
  2. 80 + 2 u = 200
  3. 4 u - 90 = 30
  4. 30 = 4 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 + 80 = 200
  2. 80 + 2 u = 200
  3. 4 u - 90 = 30
  4. 30 = 4 u - 90