Question

ex.11
dau coroana+83 puncte

Answer 1

ex 11
a) 375375 / 871871 se simplifica prin 1001= 375 / 871 
b)
abc+bca+cab= 100 a+ 10 b+ c+ 100 b + 10 c + a + 100 c +10 a +b
abc + bca+cab = 111 a +111 b + 111 c = 111 (a+b+c)
xyz +yzx + zxy= 100 x+ 10 y+ z+ 100 y + 10 z + x + 100 z +10 x +y
xyz + yzx + zxy = 111 x +111 y + 111 z = 111 (x+y+z)

(abc+bca+cab) / (xyz + yzx + zxy) = 111(a+b+c)/111(x+y+z)
se simplifica prin 111 = (a+b+c) / (x+y+z)

c)
ab0ab / 17017 se simplifica prin 1001 = ab / 17