Question

5x + 3(y-1) = 7
7(x+1)+2y=10
metoda REDUCERII​

Answer 1

sper ca te-am ajutat <3

succes, byee

Answer 2

Răspuns:

5x + 3(y-1) = 7

7(x+1)+2y=10

______________

5x+3y-3=7

7x+7+2y=10

__________

5x+3y=7+3 I ×(-2)

7x+2y=10-7 I ×3

____________

-10x-6y=-20

21x+6y=9

_________

-11x   /   =-11=>x=1

7+2y=3=>2y=3-7=>y=-2