Question

254x+309y =-55, 309x+254y=55 then 2x+y is

Answer 1

Answer:

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Step-by-step explanation:

__See in the above equation ,

254x+309y =-55

Let, x=1 & y=-1 (equation •1)

254×1 + 309×-1 = -55

254-309=-55

-55=-55

LHS = RHS

Hence, proved .

__We can cross-check also ,

By seeing 2nd Equation :-

309x+254y = 55

309×1 + 254×-1 =55

(by equation •1)

309-254=55

55=55

LHS = RHS

Hence, proved .

__By putting values we can also find the 3rd Equation :-

2x+y

2×1+(-1)

2-1

1 Ans.

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