Science talk:Math Exam Resources/Courses/MATH221/April 2013/Question 05

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Solution is wrong

Instead of C-A, A-C was calculated instead.
Not only that, but the numbers in A and C used in the solution are themselves a bit off.
A had an extra 1 and the -1 in C turned into -9.

HenryChee (talk)‎

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IainMoyles (talk)‎

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Solution is wrong