Pair of Linear Equations in Two Variables
CH03 Question Bank
CBSE_CH03_QUESTION_BANK
Grade 10
Question:
Solve the following pair of linear equations by the elimination method: $2x+y=7$, $x-y=2$.
Step-by-Step Solution
Key Concept: Add the two equations directly to eliminate $y$.
Adding the equations: $3x=9\Rightarrow x=3$. [1.0 Mark]
Substituting into $x-y=2$: $3-y=2\Rightarrow y=1$. So $x=3,\ y=1$. [1.0 Mark]
Correct Answer:
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