Andrew is showing his work in simplifying −4.5 + 4.2 + 5.6 − 7.3. Identify any errors in his work or in his reasoning. Write fee

Question

lawyer [7]

3 years ago

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Andrew is showing his work in simplifying −4.5 + 4.2 + 5.6 − 7.3. Identify any errors in his work or in his reasoning. Write fee

dback to Andrew explaining the mistake he made and how to correct his work.

Mathematics

1 answer:

Vinil7 [7] · Answer 1 · 2022-04-22T10:33:38+03:00

Solving the expression $-4.5 + 4.2 + 5.6 -7.3$ we get -2.

Comparing the solution with the one given, you can find the errors.

Step-by-step explanation:

We need to simplify $-4.5 + 4.2 + 5.6 -7.3$ and identify errors.

Since the steps are not shown, so we cannot identify errors but I can solve the expression and you can compare to find errors.

Simplifying:

$-4.5 + 4.2 + 5.6 -7.3$

Using algebraic rule: if one digit has positive (+) sign and other digit has negative (-) sign then we will perform subtraction. and after subtraction, the sign of bigger value will be the sign of result.

Using the rule and solving:

$=(-4.5 + 4.2) + 5.6 -7.3$

$=-0.3 + 5.6 -7.3$

$=(-0.3 + 5.6) -7.3$

$=5.3 -7.3$

$=-2$

Solving the expression $-4.5 + 4.2 + 5.6 -7.3$ we get -2

Comparing the solution with the one given, you can find the errors.

Keywords: Simplifying expressions

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