Question

By substitution method 7 x minus 4 Y equal to 3 ,X + 2 Y is equal to 3

Answer 1

Answer:

7x-4y=3..........(1)

x+2y=3...........(2)

7x=3+4y

x=3+4y/7.........(3)

Substitute x in 2

3+4y/7+2y=3

3+4y/7+2y×7/1×7=3

3+4y+14y/7=3

3+18y/7=3

3+18y =3×7

18y=21-3

y=18/18

y=1

Substitute y in1

7x-4y=3

7x-4×1=3

7x=3+4

x=7/7

x=1

Answer: y=1,x=1