Răspunsuri

2014-04-30T19:36:56+03:00
2x+x/2=25
(4x+x)/2=25
5x/2=25
x=25·2/5
x=10
2·10+5=25
2014-04-30T19:37:36+03:00
2a+a/2=25
(4a+a)/2=25
5a/2=25
5a=2*25
5a=50
a=50/5
a=10
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