Question

solve the following simultaneous equation.

49x-57y=172; 57x-49y=252​

Answer 1

Answer:

Let the given equation be

49x - 57y =172 ---------(i)

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

Now using elemetion method

(i) ×57 - (ii)×49 we get

(2793x - 3249y) - (2793 x - 2401y) =9804 -12348

-3249y + 2401y = - 2544

-848y = - 2544

y = -2544/ -848

y= 3

Putting the value of y in equation (i)

49x -57y= 172

49x - 57×3 =172

49x -171 = 172

49x = 172+ 171

49x = 343

x = 343/ 49

x= 7

Therefore the required solution is

x=7

y=3

Answer 2

Answer:

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Step-by-step explanation:

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