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Constanta123
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a+b+c=1089
a=23+b·3
c=2·a
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Răspuns :

Capsunica35
a+b+c=1089
a-23=3b  
a=3b+23
c=2a  
c=2(3b+23)=6b+46 

3b+23+b+6b+46=1089
10b+69=1089
10b=1089-69
10b=1020
b=102

a=306+23=329
c=612+46=658
a+b+c=1089
a=23+3b
c=2a
23+3b+b+2a=1089
4b+46+6b=1066
10b=1066-46
10b=1020
b=1020:10=>b=102
a=23+102·3=>a=23+306=>a=329
c=2·329=>c=658
verificare*:102+329+658=1089=>corect*

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