Question
Find the value of 1 unit.
  1. 6 u + 70 = 310
  2. 70 + 6 u = 310
  3. 9 u - 90 = 90
  4. 90 = 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. 6 u + 70 = 310
  2. 70 + 6 u = 310
  3. 9 u - 90 = 90
  4. 90 = 9 u - 90