Question
Find the value of 1 unit.
  1. 8 u + 70 = 550
  2. 70 + 8 u = 550
  3. 7 u - 80 = 200
  4. 200 = 7 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. 8 u + 70 = 550
  2. 70 + 8 u = 550
  3. 7 u - 80 = 200
  4. 200 = 7 u - 80