Question

si a/b=4/9,ademas ,a+b= 65 ,calcula "b-c"​

Answer 1

$\frac{a}{b} = \frac{4}{9} = k\\\\a = 4k \\\\b = 9k\\\\a + b = 65\\\\4k + 9k = 65 \\\\13k = 65\\\\k = \frac{65}{13}\\\\k = 5$

a = 4k = 4(5) = 20

b = 9k = 9(59 = 45

Eternamente axllxa