Question

4x + 5y = 7
x + 3y = 7​

Answer 1

Explicación paso a paso:

4x+5y=7

x+3y=7(-4)

I) 4x+5y=7 4x+5y=7(-3)

-4x-12y=-28 x+3y=7(5)

___________ II) -12x-15y=-21

5x+15y=35

-7y=-21 ___________

y=3 -7x=14

x=-2