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svlad2 [7]
3 years ago
9

Please help me with this question check the attachments

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
8 0

a) \: 17 - 3 \frac{1}{5}

17-\frac{3\times 5+1}{5}

LCM=5

17-\frac{16}{5}

17\times \frac{5}{5}-\frac{16}{5}

\frac{85}{5}-\frac{16}{5}

\frac{69}{5}

13 \frac{4}{5}

b) \: 2\frac{1}{5}+4\frac{1}{4}+\frac{7}{10}

6+\frac{1}{5}+\frac{1}{4}+\frac{7}{10}

LCM=20

6+\frac{4}{20}+\frac{5}{20}+\frac{14}{20}

6+\frac{4}{20}+\frac{5}{20}+\frac{14}{20}

6+\frac{23}{20}

6+1\frac{3}{20}

7\frac{3}{20}

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