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2014-10-12T22:07:29+03:00
2x(2a+b)=22-2=20 2x*5=20 2x=20:5=4 x=4:2=2 x=2
2014-10-12T22:10:02+03:00
Imparti 4ax+2bx+2=22 la 2 si totul devine 2ax+bx+1=11=>2ax+bx=10=>x(2a+b)=10=>xori 5=10=>x=2
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