Question

Please help me with this question check the attachments

Answer 1

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

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

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

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

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

$6+\frac{23}{20}$

$6+1\frac{3}{20}$

$7\frac{3}{20}$