Odpowiedź:
1)
3(5x+3)=7(x+5)-3(2-x)
15x+9=7x+35-6+3x
15x-10x=29=9
5x=20/:5
x=4
2)
[tex]2+\frac{x}{2}=\frac{1-x}{3}/*6[/tex]
12+3x=2-2x
3x+2x=2-12
5x=-10/:5
x=-2
3)
[tex]-\frac{5(x-2)}{2}=5-\frac{3x}{4}/*4[/tex]
-2(5x-10)=20-3x
-10x+20=20-3x
-10x+3x=20-20
-7x=0
x=0
4)
[tex]3(5-\frac{x}{3})=2(\frac{1}{3}-\frac{x}{2})+2\frac{1}{3}[/tex]
[tex]15-\frac{3x}{3}=\frac{2}{3}-x+\frac{7}{3}[/tex]/*3
45-3x=2-3x+21/3
-3x+3x=7-45
0≠38
x∈∅
5)
[tex]\frac{x}{3}-\frac{3(x-1)}{2}=-1\frac{1}{6}x+1,5[/tex]
[tex]\frac{x}{3}-\frac{3x-3}{2}=-\frac{7}{6}x+\frac{3}{2}/*30[/tex]
10x-15(3x-3)=-35x+45
10x-45x+45=-35x+45
-35x+35x=45-45
0=0
x∈R
Szczegółowe wyjaśnienie:
