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Methods of Solving an Equation

b Solve the f...

Question

Question 2(b)
Solve the following equations:
3(n-5)=21

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Solution

$3 (n - 5) = 21 \Rightarrow n - 5 = \frac{21}{3} \Rightarrow n - 5 = 7 \Rightarrow n = 7 + 5 \Rightarrow n = 12$

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Methods of Solving an Equation

Standard VII Mathematics

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