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Method of Substitution to Find the Solution of a Pair of Linear Equations

Solve: 2x+y=...

Question

Solve:
$2 x + y = 6 8 x - y = 4$

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Solution

$2 x + y = 6 \dots (1) 8 x - y = 4 \dots (2) (1) + (2) 10 x = 10 x = 1 ⟹ y = 4$

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