Question
Find the value of 1 unit.
  1. 5 u + 50 = 450
  2. 50 + 5 u = 450
  3. 4 u - 20 = 340
  4. 340 = 4 u - 20
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 = 450
  2. 50 + 5 u = 450
  3. 4 u - 20 = 340
  4. 340 = 4 u - 20