Question

15x-12y=69 ; 12x-15y=39 find the value x+y?​

Answer 1

Answer:

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Step-by-step explanation:

15x−12y=69                              ...(i)

12x−15y=39                           ...(ii)

On adding (i) and (ii) , we get

27x−27y=108

⇒x−y=4

On subtracting (ii) from (i) , we get

3x+3y=30

⇒x+y=10