Răspunsuri

2014-11-13T19:14:19+02:00
X+x+1+x+2+x+3=360
4x+6=360
4x=360-6
4x=354
x=354/4
x=88.5
2014-11-13T19:17:59+02:00
= 4x x (1+2+3+4) =360 4x x 10 =360 4x = 360:10 4x= 36 X=9