Question

1) 2/3 +5 +4/5 +4/5 +2/5 2) 3/5 - 7/10 * 2/7 +5/6 3) 2/3 +5/3 +4/10 + 4/10 + 1/5

Answer 1

$1. \frac{2}{3}+5+ \frac{4}{5}+ \frac{4}{5} + \frac{2}{5}</strong> \\ \\ \frac{2}{3}+5+2* \frac{4}{5}+ \frac{2}{5} \\ \\ \frac{2}{3}+5+ \frac{8}{5}+ \frac{2}{5} \\ \\ \frac{5(2)+15(5)+3(8)+3(2)}{15} \\ \\ \frac{10+75+24+6}{15} \\ \\ \frac{115}{15} = \frac{23}{3} \\ \\ \\<strong> 2. \frac{3}{5} - \frac{7}{10}* \frac{2}{7}+ \frac{5}{6}</strong> \\ \\ \frac{3}{5}- \frac{1}{5}+ \frac{5}{6} \\ \\ \frac{18-6+25}{30} \\ \\ \frac{37}{30} \\ \\<strong>$
$3. \frac{2}{3} + \frac{5}{3} + \frac{4}{10} +\frac{4}{10}+ \frac{1}{5}</strong> \\ \\ \frac{2}{3} + \frac{5}{3} + 2*\frac{4}{10}+ \frac{1}{5} \\ \\ \frac{2}{3} + \frac{5}{3} +\frac{4}{5}+ \frac{1}{5} \\ \\ \frac{10+25+12+3}{15} \\ \\ \frac{50}{15}= \frac{10}{3}$