Question

\frac{x-2}{4,5} =\frac{7,2}{1}

Answer 1

$\frac{x - 2}{4.5} = \frac{7.2}{1}$

$\frac{x - 2}{ \frac{45}{10} } = \frac{ \frac{72}{10} }{1}$

$x - 2 = \frac{45}{10} \times \frac{72}{10}$

$x - 2 = \frac{9}{2} \times \frac{36}{5}$

$x - 2 = 9 \times \frac{18}{5}$

$x - 2 = \frac{9 \times 18}{5}$

$x - 2 = \frac{162}{5}$

$5(x - 2) = 162$

$5x - 10 = 162$

$5x = 162 + 10$

$5x = 172$

$x = \frac{172}{5}$

$x = 34.4$