Răspunsuri

2014-11-12T15:24:04+02:00
A+b+c=240
a-x=25
b-x=26   .,
c-x=120
25+26+120=240-3x
171=240-3x
3x=240-171=69
x=69/3=23

a-23=25
a=25+23=48
b-23=26, b=26+23=49
c-23=120
c=120+23=143

48+49+143=240 ( adevarat , cat spune problema )
Succes !

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