Question

solve by eliminating coefficient method 7x+2y =47 and 5x-4y=1​

Answer 1

Step-by-step explanation:

Here, it will be more convenient to eliminate y.

Multiplying (1) by 2 , we get

14x+4y=94

and from (2), 5x-4 y=1

Adding these equations, we get 19x=95

$\sf\therefore x=5$

Now, substituting this value of x in (1), we get

35+2 y=47

$\: \: \: \: \tt \Rightarrow 2 y=12 \\ \Rightarrow y=6 .$

Hence x=5, y=6 is the required solution.

Answer 2

Answer:

X=5,Y=6

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