Question
Find the value of 1 unit.
  1. 2 u + 90 = 130
  2. 90 + 2 u = 130
  3. 3 u - 100 = 110
  4. 110 = 3 u - 100
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. 2 u + 90 = 130
  2. 90 + 2 u = 130
  3. 3 u - 100 = 110
  4. 110 = 3 u - 100