Question

X +y =8and 3x =y-4 are two equations .find x and y

Answer 1

X = 1 and Y = 7

Follow the picture.

Answer 2

Answer:

x+y=8

∴y=8-x       eq 1

3x=y-4       eq 2

replacing y in eq 2

3x=(8-x)-4

3x=4-x

∴x=1.