Question
Find the value of 1 unit.
  1. 7 u + 50 = 540
  2. 50 + 7 u = 540
  3. 9 u - 80 = 370
  4. 370 = 9 u - 80
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. 7 u + 50 = 540
  2. 50 + 7 u = 540
  3. 9 u - 80 = 370
  4. 370 = 9 u - 80