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Question
If 3x + 5y = 9 and 5x + 3y = 7 then What is the value of x + y?
Options
2
16
9
7
MCQ
Solution
2
Explanation:
3x + 5y = 9 ...(I)
5x + 3y = 7 ...(II)
Adding (I) and (II) we have
8x + 8y = 16
⇒ x + y = 2
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General Form of Linear Equation in Two Variables
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Chapter 5: Linear Equations in Two Variables - Problem Set 5 [Page 91]
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