Question

[(18+3•2)÷8+5+x]÷6=2

Answer 1

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Primeiro se resolve os parenteses, os colchetes, e depois o que esta de fora:

[(18+3•2)÷8+5+x]÷6=2

[(18+6)÷8+5+x]÷6=2

[(24)÷8+5+x]÷6=2

[24÷8+5+x]÷6=2

[3+5+x]÷6=2

$\frac{[3+5+x]}{6} = 2$

[3+5+x] = 12

8 + x = 12

x = 12 - 8 

x = 4

Resposta: 4

Answer 2

[(18+3.2)÷8+5+x]÷6=2
[(18+6)÷8+5+x]÷6= 2
[24÷8+5+x]÷6= 2
[3+5+x]÷6= 2
[8+x]÷6= 2
8+x÷ 6= 2
8+x= 2.6
x= 12 -8
x= 4