Question

n+3=10? n-5=35? 2÷n=18?

Answer 1

n + 3 = 10

n = 10 - 3

n = 7




n - 5 = 35

n = 35 + 5

n = 40




2 / n = 18

18 n = 2

n = 2         ÷   2 
     ----
     18        ÷   2


n =   1
      -----
         9

Answer 2

n + 3 = 10
n = 10 - 3
n = 7

n - 5 = 35
n = 35 + 5
n = 40

2 ÷ n = 18
2/n = 18
18n = 2
n = 2/18
n = 1/9