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Methods of Solving an Equation

e Solve the f...

Question

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

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Solution

Use Distributive property : A(B+C)=AB+AC
$- 4 (2 - x) = 9 \Rightarrow - 4 \times 2 - x \times (- 4) = 9 \Rightarrow - 8 + 4 x = 9 \Rightarrow 4 x = 9 + 8 \Rightarrow 4 x = 17 \Rightarrow x = \frac{17}{4}$

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Methods of Solving an Equation

Standard VII Mathematics

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