Question

solve the following by using method of subsitution :x+2y =7 ;2x+4y=14​

Answer 1

Answer:

x+7,y+0

Step-by-step explanation:

x+2y=7

y=7-x -(1)

sub (1) in second eqn

2x+4(7-x)=14

2x+28-4x=14

-2x+28=14

2x=28-14

2x=14

x=7--(3)

sub (3) in (1)

7+2y=7

2y=0

y=0