a+b+c=995
b=4*a ; a=b:4
c=59+b ; b=c-59
inlocuim si v om avea
b:4+b+59+b=995
b:4+2b=995-59
[tex] \frac{b}{4}+2b=936 [/tex]
aducem la numitor comun
[tex] \frac{b}{4}+ \frac{8b}{4}=936
[/tex]
[tex] \frac{9b}{4}=936 [/tex]
9b=4*936
9b=3744
b=3744:9
b=416
a=b:4=416:4=104
c=b+59=416+59=475