Question

Sistemele 5x + 3y =8 3x-2y si x+y=5 x-y=3 prin metoda reducerii

Answer 1

Răspuns:

S={28/19;14/14/19}

Explicație pas cu pas:

5x+3y=8  /*2

3x-2y=4 /*3

10x+6y=16

9x-6y=12

19x=28

x=28/19

5x+3y=8

5*28/19+3y=8

140/19+3y=8

aducem la acelasi numitor

140/19+57y/19=152/19

57y=152-140

y=12/57

y=4/19