Question

x+y=3,2x+5y=12 in substitution method​

Answer 1

Answer:

x+y=3.........1

x=3-y.........2

2x+5y=12.......3

now, subs 2 in 3

2(3-y)+5y=12

6-2y+5y=12

3y=12-6

y=6/3

y=2

now subs y=2 in 2

x=3-2

x=1

hope it helps u......^_^

Answer 2

Answer:

x=1 and y=2

Step-by-step explanation:

x+y=3............1

2x+5y=12.......2

y=3-x .........3

Substituting equation 3 in equation 2

2x+5(3-x)=12

2x+15-5x=12

-3x=12-15

-3x=-3

×=-3/-3

×=1

Putting value of x in equation 3

y=3-x

y=3-1

y=2

Therefore requires value of x and y are

x=1, y=2

Hope it helps you.