Răspuns:
a) 2x-5x+15+4=6x+24-2x+2-18
7x=-19 [tex]x=-\frac{19}{7}[/tex]
b) [tex]\frac{1}{2}({\frac{1}{2} [\frac{1}{2} (\frac{1}{2} x-1)-1]-1)-1=0[/tex]
[tex]\frac{1}{2}({\frac{1}{2} [\frac{1}{2} (\frac{1}{2} x-1)-1]-1)=1[/tex] /*2
[tex]{\frac{1}{2} [\frac{1}{2} (\frac{1}{2} x-1)-1]-1=2[/tex]
[tex]{\frac{1}{2} [\frac{1}{2} (\frac{1}{2} x-1)-1]=3[/tex] /*2
[tex]\frac{1}{2} (\frac{1}{2} x-1)-1=6[/tex]
[tex]\frac{1}{2} (\frac{1}{2} x-1)=7[/tex] /*2
[tex]\frac{1}{2} x-1=14[/tex]
[tex]\frac{1}{2} x=15[/tex] /*2
x=30
c) [tex]\frac{5x-7}{2} -\frac{2x+7}{3} =3x-14[/tex] /*6
15x-21-4x-14=18x-84
7x=49 x=7
Explicație pas cu pas:
