1.

If 3X + Y = 81 and 81X – Y = 3, then find the value of X is?1. 782. 13. 814. 84

Answer» Correct Answer - Option 2 : 1

Calculation:

3X + Y = 81      ----(i)

81X – Y = 3      ----(ii)

Adding equation (i) and (ii)

84X = 84

⇒ X = 1

∴ The value of X is 1



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