Răspuns :
a).845-253=592.
592:2=296.
a=296.b=296+253=549.
b).845:5=169.
a=169.b=169•4=676
Notam numerele cu a si b.
a+b=845
a) a= 253+b => 253+b+b=845
253+2b=845
2b=582 => b=291
a+291=845 => a=554
b) a=[tex] \frac{b}{4} [/tex] => [tex] \frac{b}{4} [/tex] + [tex] \frac{b}{1} [/tex] = 845
[tex] \frac{5b}{4} [/tex] = 845
=> b = [tex] \frac{845x4}{5} [/tex]
=> b = 676
a+b=845
a) a= 253+b => 253+b+b=845
253+2b=845
2b=582 => b=291
a+291=845 => a=554
b) a=[tex] \frac{b}{4} [/tex] => [tex] \frac{b}{4} [/tex] + [tex] \frac{b}{1} [/tex] = 845
[tex] \frac{5b}{4} [/tex] = 845
=> b = [tex] \frac{845x4}{5} [/tex]
=> b = 676