Question

determine el valor incógnita en cada una de las siguientes proporciones.
a.
$\frac{x}{2} = \frac{15}{6}$
b.
$\frac{63}{x} = \frac{9}{5}$
c.
$\frac{8}{5} = \frac{12}{y}$
d.
$\frac{49}{56} = \frac{y}{8}$
​

Answer 1

Respuesta:

$a)\\\\\frac{x}{2}= \frac{15}{6}\\\\6x = 15*2\\\\6x = 30\\\\x = 30/6\\\\x = 5$

$b)\\\\\frac{63}{x} =\frac{9}{5}\\\\63 * 5 = 9x\\\\315 = 9x\\\\315/9 = x\\\\35 = x$

$c)\\\\\frac{8}{5} =\frac{12}{y}\\\\8y = 12 * 5\\\\8y = 60\\\\y = 60/8\\\\y = 15/2$

$d)\\\\\frac{49}{56}= \frac{y}{8}\\\\49*8 = 56 * y\\\\392 = 56y\\\\392/56 = y\\\\7 = y$

Explicación paso a paso: