Question
Find the value of 1 unit.
  1. 7 u + 80 = 500
  2. 80 + 7 u = 500
  3. 7 u - 80 = 550
  4. 550 = 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. 7 u + 80 = 500
  2. 80 + 7 u = 500
  3. 7 u - 80 = 550
  4. 550 = 7 u - 80