Question

Rezolvă sistemele prin metoda reducerii:
a){2x-3y=1. b){0.5+2y=4
{y+3x=2. {x-0.5y=1

Answer 1

Răspuns:

a) {2x-3(2-3x)=1 =>{11x=7. =>{x=7/11

{y=2-3x =>{y=2-3(7/11) =>{y=1/11

b){2y=4-0.5 => {y= (4-0.5)/2 =>{ y=1.75

{x=1+0.5y => {x= 1+0.5(1.75) =>{x=1.87