Răspunsuri

Cel mai inteligent răspuns!
2014-11-15T19:17:44+02:00
A) x+x-76=180*
2x=256*
x=128*
b.)x+x+59=180
2x=121
x=60,5*
9 4 9
2014-11-15T19:18:42+02:00