Question

Sa se rezolve:
/3-x/-1=2x

/2x+1/=x-3

/4x+3/-2x= 6

Answer 1

a)|3-x|-1=2x
|3-x|=2x+1=>

=>3-x=2x+1 sau 3-x=-(2x+1)
3-1=2x+x 3-x=-2x-1
2=3x 3+1=-2x+x
x=2/3 -x=4
x=-4
b)|2x+1|=x-3=>

=>2x+1=x-3 sau 2x+1=-(x-3)
2x-x=-3-1 2x+1=-x+3
x=-4 2x+x=3-1
3x=2
x=2/3
c)|4x+3|-2x=6
|4x+3|=6+2x=>

=>4x+3=6+2x sau 4x+3=-(6+2x)
4x-2x=6-3 4x+3=-6-2x
2x=3 4x+2x=-6-3
x=3/2 6x=-9
x=-9/6
x=-3/2