Question

If 217x + 131y = 913, 131x + 217y = 827, then x + y is ______.

विकल्प

• 5

• 6

• 7

• 8

Answer 1

If 217x + 131y = 913, 131x + 217y = 827, then x + y is 5.

Explanation:-

Adding the two given equations

we get

348x + 348y = 1740.

So x + y = 5