Răspunsuri

2014-11-06T15:18:47+02:00
X=1752:103=17
2x+5=23....2x=23+5=28...x=28:2=14
4x:10=1000....4x=1000:10=>x=100*4=400
10x=100..x=100:10=10
30+10+5x=60....5x=60-40=20...x=20:5=4

2014-11-06T15:28:18+02:00
Xx103=1751,x=1751:103=17
2x+5=23,2x=18,x=9
4x:10=1000,4x=10000,x=2500
2xXx5=100,10x=100,x=10
5x(6+2x)=60,30+10x=60,10x=30,x=3
(13+x):15=15,13+x=225,x=212
72:(x-2)=9,x-2=8,x=10
1157:x=13,x=1157:13=89
(x+17)x4=63+17=80,4x+68=80,4x=12,x=3
marcheaza-l daca e cel mai bun raspuns!mULTUMESC!