Răspuns:
-9x+18=0
-9x=-18
x=-18÷(-9)
x=2
(radical din)3x-(radical din)3=0
√ 3x- √ 3=0
scoatem √ 3 factor comun
√ 3× (x-1)=0
x-1=0 => x=1
x(radical din)2-(radical din)3=0
x√2 - √3 = 0
x√2= √3
x= √3/√2
x= √6/2
5x-11=x-3
5x-x=-3+11
4x=8
x=8÷4
x=2
8x+20=3x
8x-3x=-20
5x=-20
x=-20÷4
x=-5
√3x+4=1-2√3x
√3x+2√3x=1-4
3√3x=-3 /÷3
√3x=-1
x=-1/√3
x=-√3/3
2(x+3)-5(2x+1)=12x-19
2x+6-10x-5=12x-19
-8x-12x=-19-1
-20x=-20 /×(-1)
20x=20
x=20/20
x=1
5(x-2)-2x=3(x=1)=6+7x
Ai 3 simboluri de = aici
ceva nu e bine
6(x+2)-2(2x+3)=4x=36
și aici ai 2 de =
6x+12-4x-6=4×=36
2x+6=4x-36 am pus eu -36
2x-4x=-36-6
-2x=-42 /÷(-2)
x=21
