Question

a) n + 3 = 10 ? . b) n - 5 = 35? . c) 2 . n = 18?

Answer 1

A) n + 3 = 10
n = 10 - 3
n = 7
B) n - 5 = 35
n = 35 + 5
n = 40
c) 2.n= 18
2n = 18
n = 18/2
n = 9

Answer 2

a) n + 3 = 10
    n = 10 - 3
    n = 7

b) n - 5 = 35
    n = 35 + 5
    n = 40

c) 2 * n = 18
    n = 18 / 2
    n = 9

Espero ter ajudado. Valeu!