Question

solve x+3y=7, 2x+4y=6 by substitution method ​

Answer 1

Answer:

use first in second

x=7-3y in second

2(7-3y)+4y=6

14-6y+4y=6

2y=8

y=4 so x=-5

Answer 2

Step-by-step explanation:

X+3y=7........1

and 2x+4y=6.........2

multiplying equation by 1

eq.1,=2x+6y=14.........3

subtracting equation 3 from 2

2x+6y=14

-2x-4y=-6

2y = 8

y =4

putting y in eq 2

2x +16=6

2x = -10

X =-5