Asked by Rachel

Simplify:

3/5 x 13.65 - 2/9 x 1.307

When I work this problem I get:
7.899555556

_
Would that be: 7.89
(or)

_
7.8995













The answer depends upon the order of operations, which must be clarified with parentheses and brackets. What you calculated is
[(3/5) x 13.65)] - [(2/9) x 1.307)

If you had calculated
[(3/5 - 13.65)- 2/9)] - 1.307,
you would have obtained a completely different answer.

You should round your answer to 4 significant figures, to match the accuracy of the decimal terms. That would make it 7.900

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