Question

se x= 1,555... e y= 0,8181 entao x-y e igual a:
a)14/11
b)11/14
c)126/33
d)33/62
e)11/12

Answer 1

$x=1,555...=1+ \frac{5}{9}= \frac{14}{9}\\\\y=0,8181...= \frac{81}{99}= \frac{9}{11} \\\\x-y= \frac{14}{9}- \frac{9}{11}\\\\x-y= \frac{154-81}{99}\\\\x-y= \frac{73}{99}\ ou\0,737373...$