ConceptAlgebraic Methods of Solving a Pair of Linear Equations - Substitution Method

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#### Question

Solve the following systems of equations by eliminating ‘y’ (by substitution) :

**(i)** 3x – y = 3

7x + 2y = 20

**(ii)** 7x + 11y – 3 = 0

8x + y – 15 = 0

**(iii)** 2x + y = 0

17x – 11y – 8 = 0

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#### Reference Material

Solution for concept: Algebraic Methods of Solving a Pair of Linear Equations - Substitution Method. For the course CBSE