Odpowiedź :
a) 2x-1/2(3x-2)=7/4-x
2x-3/2x+1=7/4-x
2x+x-3/2x=7/4-1
3/2x=3/4
x=1/2
b) 3 1/3 x+8=4 2/5 x – 8
10/3x+8=22/5x-8
10/3x-22/5x=-8-8
50/15x-66/15x=-16
-16/15x=-16
x=15
Odpowiedź:
[tex]a)\\\\2x-\frac{1}{2}(3x-2)=\frac{7}{4}-x\\\\2x-\frac{3}{2}x+1=\frac{7}{4}-x\ \ /*4\\\\8x-6x+4=7-4x\\\\2x+4x=7-4\\\\6x=3\ \ /:6\\\\x=\frac{3}{6}\\\\x=\frac{1}{2}\\\\\\b)\\\\3\frac{1}{3}x+8=4\frac{2}{5}x-8\\\\\frac{10}{3}x+8=\frac{22}{5}x-8\ \ /*15\\\\50x+120=66x-120\\\\50x-66x=-120-120\\\\-16x=-240\ \ /:(-16)\\\\x=\frac{240}{16}\\\\x=15[/tex]