Question

se (2+3)² - x = 12, então x vale?

Answer 1

(2+3)²=25

25-x=12

-x=12-25

-x=-13

x=13

Answer 2

(2+3)² - x = 12

5² - x = 12

25 - x = 12

-x = 12 - 25

-x = -13

x = -13 : -1

x = 13

Resposta: 13