Question

Rezolvati ecuatiile in R .
3{[( x- x+3 supra 4) ori 2-x supra 3] ori 2 supra 3-2x supra 3}=6-2x supra 3.
3[(2x-x+1 supra 3) ori 2+un intreg si 1 pe 3]+2x-4=5x+12

Answer 1

Te ajut la 2)!

2x - (x+1)/3 = (5x-1)/3;

[(5x-1)/3]*2 = (10x-2)/3;

1 intreg si 1/3 = 4/3;

(10x-2)/3 + 1/3 = (10x-1)/3;

3*[(10x-1)/3] = 10x -1;

10x -1 + 2x - 4 = 12x -5;

12x -5 = 5x +12 <=> 7x = 17 <=> x = 17/7 <=> x = 2,42;

Bafta!