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Question
Find x: 20 – 2(5 – p) = 8
Sum
Solution
Expanding the bracket,
20 – 2 × 5 – 2 × (– p) = 8
20 – 10 + 2p = 8 ....(– 2 × – p = 2p)
10 + 2p = 8 transposing to other side
2p = 8 – 10 = – 2
∴ 2p = – 2
∴ p = – 1
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Chapter 3: Algebra - Exercise 3.6 [Page 102]
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