Răspuns :
7x-6x=3, se trec cu semn schimbat, deci x=1
5x+x-5x=-1+2=> x=1
2x-x=14-6=> x=12
3x-2x=10-3-6=> x=1
5x+x-5x=-1+2=> x=1
2x-x=14-6=> x=12
3x-2x=10-3-6=> x=1
1) 7x-3=6x
7x-6x=3
x=3
2) 5x-2+x=5x-1
5x+x-5x=2+1
x=3
3) 2(x+3)=x+14
2x+6=x+14
2x-x=14-6
x=8
4) 3(x+2)+3=2x+10
3x+6+3=2x+10
3x-2x=10-6-3
x=1
7x-6x=3
x=3
2) 5x-2+x=5x-1
5x+x-5x=2+1
x=3
3) 2(x+3)=x+14
2x+6=x+14
2x-x=14-6
x=8
4) 3(x+2)+3=2x+10
3x+6+3=2x+10
3x-2x=10-6-3
x=1