Question

Suma a trei numereeste 43257.Calculatinumerele , stind ca al doilea este de 2 ori mai mare decat primul si cu 257mai mic decat al treilea

Answer 1

a+b+c=43257
b=2a
c=2a+257
a+2a+2a+257=43257
5a=43257-257
5a=43000
a=43000:5=8600
b=2a=2x8600=17200
c=b+257=17200+257=17457
8600+17200+17457=43257(verificare)

Answer 2

[tex]a+b+c=43257\\ b=2a~;~b=257-c\\ b/2+b+257+b=43257\\ b+2b+514+2b=86514\\ 5b=86000\\ b=17200\\\\ a=17200:2=\ \textgreater \ a=8600\\\\ c=17200+257=\ \textgreater \ c=17457\\\\ Proba:8600+17427+17200=43257\\ 8600+34657=43257\\ 43257=43257[/tex]