Question

descubra o valor do x ​

Answer 1

x / 14  =  9 / 12

12 * x = 14 * 9

12x = 126

x = 126/12

x = 10,5

Answer 2

Resposta:

$\boxed{ \boxed{ \bf{x = \frac{21}{2} \: \text{ou} \: 10,5} } }$

Explicação passo-a-passo:

$\frac{ \bf{x} }{14} = \frac{9}{12} \\ \\ 12 \cdot x = 14 \cdot9 \\ 12x = 126 \\ x = \frac{126 \div 6}{12 \div 6} \\ \boxed{ \bf{x = \frac{21}{2} } }$