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Subjects
Class 10MathematicsPair of Linear Equations in Two VariablesAlgebraic methods: Substitution method and Elimination method.HardLevel 56

If (5x+2y=28) and (7x-3y=19), what will be the value of (2x-y)?

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Answer and explanation

Correct answer: (8)

Solving gives (x=4) and (y=0). In exams, check the whole expression even when one value is zero.

Tags

linear equationseliminationexpressionclass 10

Frequently asked questions

What is the correct answer to this question?

(8)

Why is this the correct answer?

Solving gives (x=4) and (y=0). In exams, check the whole expression even when one value is zero.

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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