Răspunsuri

2014-10-17T17:31:10+03:00
Ab+bc \frac{ab+ba+c}{10}
la inceput nu mai pune ab + bc scuze am gresit scrii doar fractia
bine
2014-10-17T17:32:33+03:00
10a+b+10b+a+c=11a+11b+c=11(a+b)+c