49 x - 57 y = 172 ; 57 x - 49 y = 252

1.	49 x - 57 y = 172 ; 57 x - 49 y = 252
Answer» Given :- 49x - 57y = 172 ........(i), and 57x-49y=252.............(ii) Adding (i) and (ii), we get 106x - 106y = 424 => x - y = 4 .................(iii) Now substracting (i) and (ii), we get -8x - 8y = -80 => x + y = 10 ...............(iv) Adding (iii) and (iv), we get 2x = 14 => x = 7 putting the value of x in question (iii), we get y = 3 Like my answer if you find it useful!

Answer»

Given :-

49x - 57y = 172 ........(i), and

57x-49y=252.............(ii)

Adding (i) and (ii), we get

106x - 106y = 424

=> x - y = 4 .................(iii)

Now substracting (i) and (ii), we get

-8x - 8y = -80

=> x + y = 10 ...............(iv)

Adding (iii) and (iv), we get

2x = 14

=> x = 7

putting the value of x in question (iii), we get

y = 3

Like my answer if you find it useful!

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