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triplul sumei a 3 termeni este 984..a+2b+2c=514 Care sunt termenii stiind ca a=2b.

Răspuns :

a=142
b=71
c=59
(vrei si rezolvarea?)
3(a+b+c)=984;=>a+b+c=984:3=328; a+2b+2c=514; (a+2b+2c)-(a+b+c)=514-328; c+b=186; (a+b+c)-(c+b)=328-186; a=142;=>b=142:2=71; c+b-b=186-71; c=115; Verificare:3(142+71+115)= 3×328=984; 142=71×2; 142+2×71+2×115=142+142+230=514