-We are gonna get the value of x from first equation

-We will put that in second equation

-This gives an wequation in y

-Get value of y

-And thus the value of x

1st one:

2x+3y = 8

2x = 8 - 3y

Hence

Put the value of x as in 1

Hence

Hence

Thus

And

2nd One ;

Put the value of x from 1 here

Hence

Thus