Răspuns :
2x-16=x+4
2x-x=4+16
x=20
3y-25=(-2)y+253y+2y=25+25
5y=50
y=50:5
y=10
5z+12=3z+24
5z-3z=24+12
2z=36
z=36:2
z=18
2x-x=4+16
x=20
3y-25=(-2)y+253y+2y=25+25
5y=50
y=50:5
y=10
5z+12=3z+24
5z-3z=24+12
2z=36
z=36:2
z=18
2x-16=x+4
2x-x=4+16
x=20
3y-25=-2y+25
3y+2y=25+25
5y=50
y=50:5
y=10
5z+12=3z+24
5z-3z=24-12
2z=12
z=12:2
z=6
2x-x=4+16
x=20
3y-25=-2y+25
3y+2y=25+25
5y=50
y=50:5
y=10
5z+12=3z+24
5z-3z=24-12
2z=12
z=12:2
z=6