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Nimfa-mama [501]
3 years ago
5

Solve: -9 + (-12) - -13 =

Mathematics
2 answers:
Mama L [17]3 years ago
8 0

Answer:

-8

Step-by-step explanation:

Strike441 [17]3 years ago
4 0

Answer:

-8

Step-by-step explanation:

-9 + (-12) - (-13) = -8

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Step-by-step explanation:

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4 0
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now, let's convert those mixed fractions to improper fractions and then subtract, bearing in mind our LCD will be 8.

\bf \stackrel{mixed}{4\frac{5}{8}}\implies \cfrac{4\cdot 8+5}{8}\implies \stackrel{improper}{\cfrac{45}{8}}~\hfill \stackrel{mixed}{3\frac{1}{2}}\implies \cfrac{3\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{7}{2}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{45}{8}-\cfrac{7}{2}\implies \stackrel{\textit{using the LCD of 8}}{\cfrac{(1)45~~-~~(4)7}{8}}\implies \cfrac{45-28}{8}\implies \cfrac{17}{8}\implies 2\frac{1}{8}

6 0
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