Solve the following equations and verify the answers.
$3 y + 1 = 7 y + 9$

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Solution

$3 y + 1 = 7 y + 9 \to (i) 3 y - 7 y = 9 - 1 - 4 y = 8 y = \frac{3}{4} y = 2 V a r i f i v a t i o n p u t t h e v a l u e o f y i n e q a u a t i o n (i) 3 (- 2) + 1 = 7 (- 2) + 9 - 6 + 1 = - 14 + 9 - 5 = - 5$

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