Mathematics · Linear Equations
The pair of equations 3 x+y = 81 and 81 x-y = 9 has the solution:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1x = 7 4 , y = 21 4
- 2x = 9 4 , y = 7 4✓
- 3x = 7 4 , y = 9 4
- 4x = 3, y = 1
Correct answer
x = 9 4 , y = 7 4
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