Odpowiedź:
a)
9x - 3 = 2x +4
9x - 2x = 3 + 4
7x = 7 /:7
b)
4(x-1)=6(1+x)
4x - 4= 6+6x
4x-6x= 4+6
-2x=10 /:2
-x= 5
x=5
c)
[tex]\frac{3}{4}[/tex](2-3x) = -6 /*4
3(8-12x) = -24
24-36x= -24
-36x = -24-24
-36x = -48 /:36
-x = -1[tex]\frac{7}{18}[/tex]
x= 1[tex]\frac{7}{18}[/tex]
d)
[tex]\frac{4x+7}{2} -\frac{5x -1}{6}[/tex] = x+5 /*6
3(4x+7)-5x+1 = 6x+ 30
12x+21-5x+1 = 6x+30
12x-5x-6x = -21 - 1+ 30
x= 8
