Question
Find the value of 1 unit.
  1. 5 u + 50 = 550
  2. 50 + 5 u = 550
  3. 4 u - 90 = 310
  4. 310 = 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. 5 u + 50 = 550
  2. 50 + 5 u = 550
  3. 4 u - 90 = 310
  4. 310 = 4 u - 90