Question
Find the value of 1 unit.
  1. 4 u + 90 = 450
  2. 90 + 4 u = 450
  3. 8 u - 50 = 430
  4. 430 = 8 u - 50
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 + 90 = 450
  2. 90 + 4 u = 450
  3. 8 u - 50 = 430
  4. 430 = 8 u - 50