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Question

Solve the system: \(y = 2x + 1\) and \(y = -x + 4\).

This question was previously asked in
SSC CGL 2025 Tier 2 Paper 1 Question Paper (19-Jan-2026)
The correct answer is

(1, 3)

Step 1 – equate the two expressions for y:

\(2x + 1 = -x + 4\)

\(3x = 3 \implies x = 1\)

Step 2 – substitute back to find y:

\(y = 2(1) + 1 = 3\)

Hence, the solution is (1, 3).

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Important Questions from Linear Equation in 2 or more Variables

  1. If \(3x+6y+9z = \dfrac{20}{3}, 6x+9y + 3z = \dfrac{17}{3}\)  and  \(18x+ 27y - z = \dfrac{113}{9}\) , then what is the value of  \(75x+113y \ ?\)

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