Question

cum le rezolv? am mare nevoie

Answer 1

(x-1)/2=(x+1)/3 + (x+2)/4
6(x-1)/12=4(x+1)/12 + 3(x+2)/12 
6x-6=4x+4 + 3x+6
6x-6=7x + 10
-x=16
x=16

{[(x+2)/3].4}/5-6=6
{[(x+2)/3].4}/5=12
[(x+2)/3].4=60
(x+2)/3=15
(x+2)=45
x=43

am pus . in loc de ori pt ca nu am alt semn