Question
Find the value of 1 unit.
  1. 4 u + 50 = 210
  2. 50 + 4 u = 210
  3. 7 u - 90 = 470
  4. 470 = 7 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. 4 u + 50 = 210
  2. 50 + 4 u = 210
  3. 7 u - 90 = 470
  4. 470 = 7 u - 90