Question

How do you solve the system using elimination x=−4y and 3x+5y=−11?

Answer 1

x=-4y

3x+5y=-11______(1)

x=-4y put in equation ( 1 )

3(-4y)+5y=-11

-12y+5y=-11

-7y=-11

y=11/7

y=11/7 put in equation ( 1 )

3x+5 (11/7)=-11

3x+55/7=-11

21x+55=-77

21x=-77-55

21x=-132

x=-132/21

x=-44/7