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Subjects
Class 10MathematicsPair of Linear Equations in Two VariablesAlgebraic methods: Substitution method and Elimination method.ExpertLevel 57
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If (\frac{3}{x}+\frac{2}{y}=13) and (\frac{2}{x}-\frac{1}{y}=3), what is the value of (\frac{1}{x})?

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Answer and explanation

Correct answer: (3)

Let (u=\frac{1}{x}) and (v=\frac{1}{y}). Solve (3u+2v=13), (2u-v=3) carefully before choosing.

Related tags

Pair-Linear-Equations-Reciprocal-Substitution

Frequently asked questions

What is the correct answer to this question?

(3)

Why is this the correct answer?

Let (u=\frac{1}{x}) and (v=\frac{1}{y}). Solve (3u+2v=13), (2u-v=3) carefully before choosing.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Pair of Linear Equations in Two Variables. Topic: Algebraic methods: Substitution method and Elimination method..

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  7. 7If the two lines have a unique point of intersection (r,s) that satisfies (3r+s=19) and (r-s=1), what is the value of (r+s)?
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