1.

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Answer:

Step-by-step explanation:

Add both the EQUATION ,

2x+y =23

4x-y =19

Ans 6X =42. 2(7) + y =23

X=7. 14+y =23

Y =23-14

Y= 9

Subsitute the VALUE of x and y

5(9)- 2(7)

45 -14

Ans :-31 (a) option



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