Răspuns :
a+b=693
a-b=[tex] \frac{b}{4} [/tex] => a=[tex] \frac{b}{4} [/tex]+b=[tex] \frac{5b}{4} [/tex]
[tex] \frac{5b}{4} [/tex]+ b=693 => [tex] \frac{9b}{4} [/tex] =693
9b=2772 => b=308 => a=693-308=385
a-b=[tex] \frac{b}{4} [/tex] => a=[tex] \frac{b}{4} [/tex]+b=[tex] \frac{5b}{4} [/tex]
[tex] \frac{5b}{4} [/tex]+ b=693 => [tex] \frac{9b}{4} [/tex] =693
9b=2772 => b=308 => a=693-308=385
a+b=693 a=693-b
a-b=b:4
4(a-b)=b
4a-4b=b
4a=4b+b
4a=5b
4(693-b)=5b
2772-4b=5b
5b+4b=2772
9b=2772
b=308 4a=5b=5*308=1540
a=1540:4
a=385
a+b=385+308=693
a-b=b:4
4(a-b)=b
4a-4b=b
4a=4b+b
4a=5b
4(693-b)=5b
2772-4b=5b
5b+4b=2772
9b=2772
b=308 4a=5b=5*308=1540
a=1540:4
a=385
a+b=385+308=693