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a+b+c=775 a=3/4 din b c=2/3 din a + 109

Răspuns :

a+b+c=775
a=3b/4
c=2a/3 + 109 => c= 2/3*3b/4 +109 => c= 6b/12 +109 => c= b/2 + 109

3b/4+b+b/2+109=775 Faci calculele => b=296
a=3*296/4=222
c=296/2+109=257