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Methods of Solving an Equation

f Solve the f...

Question

Question 2(f)
Solve the following equations:
4(2-x)=9

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Solution

Use Distributive property : A(B+C)=AB+AC
$4 (2 - x) = 9 \Rightarrow 4 \times 2 - x \times (4) = 9 \Rightarrow 8 - 4 x = 9 \Rightarrow - 4 x = 9 - 8 \Rightarrow - 4 x = 1 \Rightarrow x = \frac{- 1}{4}$

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Methods of Solving an Equation

Standard VII Mathematics

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