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Solve the simple equation and check the results : 18 – 7n = – 3 |
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Answer» Given 18 – 7n = – 3 ⇒ 18 – 7n – 18 = – 3 – 18 (Subtract 18 on both sides) ⇒ – 7n = – 21 ⇒ -7n/-7n = -21/-7 (Divide by – 7 on both sides) ⇒ n = 3 Check: Substitute n = 3 in 18 – 7n = – 3 LHS = 18 – 7n = 18 – 7(3) = 18 – 21 = – 3 = RHS Hence verified. |
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