Question

2x-y=4
5x+3y = 2.. Find by substitution method​

Answer 1

Solution:-

We have

=> 2x - y = 4 ....(i)eq

=> 5x + 3y = 2 ......(ii)eq

Now using substitution method so we take (i)eq

=> 2x - y = 4

=> - y = 4 - 2x

=> y = 2x - 4 ......(iii)eq

Now put the value of y on (ii)eq

=> 5x + 3(2x - 4) = 2

=> 5x + 6x - 12 = 2

=> 11x = 12 + 2

=> 11x = 14

=> x = 14/11

Now put the value of x on (iii)eq

=> y = 2x - 4

=> y = 2× 14/11 - 4

=> y = 28/11 - 4

=> y = (28 - 44)/11

=> y = -16/11

So Value of x = 14/11 and y = -16/11