Question

Determinar el valor de x en cada caso.
a) 4/7 = 12/X
b)2/5=14/x
c)45/x=9/5​

Answer 1

a)

$\frac{4}{7} = \frac{12}{x} \\4x=(12)(4)\\4x=48\\x=\frac{48}{4} \\x=12$

b)

$\frac{2}{5} = \frac{14}{x} \\2x=(14)(5)\\2x=70\\x=\frac{70}{2} \\x=35$

c)

$\frac{45}{x} = \frac{9}{5} \\9x=(45)(5)\\9x=225\\x=\frac{225}{9} \\x=25$