Răspunsuri

2014-10-26T18:30:23+02:00
X/2+x/3=145
(3x+2x)/6=145
5x=145·6
5x=870
x=870/5
x=174

2014-10-26T19:37:30+02:00
X:2+x:3=145 
(3+2x):6=145
5x=143 x 6 
5x=870
x=870:5 
x=175