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Mary simplified the math expression below. The steps that she took are shown. Which is the line where Mary first made her mistake. Line A: – 6 + 9 Line B: [8 + 5 x 3] – 6 + 9 Line C: – 6 + 9 Line D: 23 – 6 + 9 Line E: 23 – 15 Line F: 8

User Regestea
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1 Answer

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Answer:

Line E

Explanation:

Given

The instructions in the question

Required

The first line of mistake

The question has missing details, as the original expression is not given;

Reading through the question, one can observe that, Mary made a mistake at Line E.

The expression on D is:


23 - 6 + 9

The expression on E is:


23 - 15

The actual result of D is:


23 - 6 + 9 = 23 + 3

not


23 - 15

Because:


-6 + 9 = 3


-6 + 9 \\e 15

With the available information, we can conclude that Mary's first mistake is at line E

User Bitski
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