Question

4x + 3y = 10
5x + 7y = 45​

Answer 1

Explicación paso a paso:

4x + 3y = 10

5x + 7y = 45

+5(4x + 3y = 10)

-4(5x + 7y = 45)

20x+15y=50

-20x-28y=-180

-13y=-130

y=130/13

y=10

4x + 3y = 10

4x+3(10)=10

4x+30=10

4x=10-30

4x=-20

x=-20/4

x=-5

el valor de y=10 y de x=-5