Răspunsuri

2014-01-23T22:39:00+02:00
A) 3(2x-4) =18
2x-4 = 18:3
2x-4=6
2x=6+4
2x=10
x=10:2
x=5

b)6(3x+1)=42
3x+1=42:6
3x+1=7
3x=7-1
3x=6
x=6:3
x=2
2014-01-23T22:41:31+02:00