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Mathematics · 2025 · 2 marks
CBSE 2025 · Region 4 · Set 3 · Q25
Solve the following system of equations algebraically: 73 x-37 y=109 37 x-73 y=1
Solve the following system of equations algebraically : $\displaystyle 73 x-37 y=109$ \[37 x-73 y=1 \]
Marking-scheme solution
Adding and subtracting the given equations, we get
\[x-y=1 \quad \ldots \text { (i) }
\]
\[\text { and } x+y=3 \quad \ldots \text { (ii) }
\]
Solving (i) and (ii), we get
\[x=2, y=1
\]
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CBSE Class 10 Mathematics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.