Resposta :
Oyasumi!✅
x/10 + 2 = 3
x/10 + 10 . 2/10 = 3
x + 10 . 2/10 = 3
x + 20/10 = 3
10 (x + 20/10) 10 . 3
x + 20 = 10 . 3
x + 20 = 30
x + 20 - 20 = 30 - 20
x = 30 - 20
Oyasumi!✅
x/10 + 2 = 3
x/10 + 10 . 2/10 = 3
x + 10 . 2/10 = 3
x + 20/10 = 3
10 (x + 20/10) 10 . 3
x + 20 = 10 . 3
x + 20 = 30
x + 20 - 20 = 30 - 20
x = 30 - 20