Chap 6 Error Analysis Homework 2 Ex 6.2 Q1(f)

Go through the working and attempt to identify where the error is.

2 comments:

  1. From line 2 onwards, he should be doing this instead:
    9x - 3 -20 + 8x = -10
    17x - 23 = -10
    17x = 13
    x = 13/17

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  2. At line 2, he should have bracketed (20-8x) after the expansion of 4(5-2x). After removing the brackets, it would be (20+8x)

    Hence, line 2 should have been:
    9x-3-20+8x= -10

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