Question

8) 7x + 2y = 24 8x + 2y = 30

Answer 1

Answer:

x = 6 , y = -9

Step-by-step explanation:

7x + 2y = 24 ------------------- eq (1)

8x + 2y =30--------------------eq (2)

subtracting eq (1) from eq (2)

    8x + 2y = 30

    -7x - 2y =  -24

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

     x  - 0    =  6

hence x = 6

putting this value of x in eq (2) ,

=>  8 (6) + 2y = 30

=> 48 + 2y = 30

=> 2y = 30 - 48

=> y =  -18 / 2

=> y =  -9