Question
Find the value of 1 unit.
  1. 2 u + 30 = 210
  2. 30 + 2 u = 210
  3. 7 u - 70 = 140
  4. 140 = 7 u - 70
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 + 30 = 210
  2. 30 + 2 u = 210
  3. 7 u - 70 = 140
  4. 140 = 7 u - 70