Question

qual seria o resutado dessa questão
30/90=2,5/x

Answer 1

Explicação passo-a-passo:

$\\ \displaystyle \mathsf{\frac{30}{90} = \frac{2,5}{x}} \\\\ \mathsf{30x = 90 \cdot 2,5 \qquad \qquad \div (30} \\\\ \mathsf{x = 3 \cdot 2,5} \\\\ \boxed{\boxed{\mathsf{x = 7,5}}}$