Răspuns:
a+b+c=99
a=b+9
a=2c =>c=a/2=(b+9)/2
b + 9 + b + (b+9)/2 = 99 /x2
2b+18+2b+b+9=198
5b=198-27
5b=171 =>b=34,2
a=43,2
c=21,6
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Răspuns:
a+b+c=99
a=b+9
a=2c =>c=a/2=(b+9)/2
b + 9 + b + (b+9)/2 = 99 /x2
2b+18+2b+b+9=198
5b=198-27
5b=171 =>b=34,2
a=43,2
c=21,6