Question

plz give the solution of both equation -> 2x + 3y = 8 and 5x + 7y = 3​

Answer 1

Answer:

2x + 3y = 8

=> x = (8 - 3y)/2

5x + 7y = 3

=> 5(8 - 3y)/2 + 7y = 3

=> 40 - 15y + 14y = 6

=> y = 34

x = (8 - 3y)/2

x = (8 - 102)/2

x = -94/2

x = -47

_________

Answer 2

By elimination method,

2x + 3y = 8 ------(eq1) (Multiple by 5)

5x + 7y = 3 ------(eq2) (Multiple by 2)

Šø,

10x + 15y = 40

10x + 14y = 6

- - -

-----------------------

y = 34

Putting y = 34 in (eq1)

2x + 3(34) = 8

2x + 102 = 8

2x = 8 - 102

2x = -94

x = -47