Question

а
13(x - 2)+213(x+1)= 613 ;
Б) 25 (х + 2) + 4/6 = 35 (2x + 2/2) - 2/3x;​

Answer 1

Răspuns:

a) 13(x-2)+213(x+1)=613

13x-26+213x+213=613

226x+187=613

226x=613-187

226x=426

x=426/226

b)25(x+2)+4/6=35(2x+2/2)-2/3 x

25x+50+4/6=35(2x+1)- 2/3 x

25x+152/3=70x-35- 2/3 x

75x+152=210x+105-2x

75x+152=208x+105

75x-208x=105-152

-133x=-47

x=47/133