1.) 8/12
2.) 1/8
3.) 15
4.) -10/6
5.)6/25
6.)11/9
Penjelasan dengan langkah-langkah:
[tex] 1.) \: \frac{2}{7} + \frac{6}{3} = \frac{2}{21} + \frac{6}{21} = \frac{8}{21} [/tex]
[tex] 2.) \: \frac{4}{7} \times \frac{2}{8} = \frac{4 \times 2}{7 \times 8} = \frac{8}{56} = \frac{8 \div 8}{56 \div } =\frac{1}{8} [/tex]
[tex] 3.) \: \frac{2}{3} + \frac{3}{5} - 5 = \frac{2 + 3 - 5}{15} = 15[/tex]
[tex]4.) \: \frac{1}{2} - \frac{14}{6} + 3 = \frac{1 - 14 + 3}{6} = \frac{ - 10}{6} [/tex]
[tex]5.) \: ( \frac{1}{2} + \frac{3}{4} ) + 25\% - 1\frac{1}{4} \\ = ( \frac{1 }{2} + \frac{3}{4} ) + \frac{25}{100} - \frac{5}{4} \\ = \frac{4}{100} + \frac{25}{100} - \frac{5}{100} \\ = \frac{29}{100} - \frac{5}{100} = \frac{24}{100} \\ = \frac{24 \div 4}{100 \div 4} = \frac{6}{25}
[/tex]
[tex] 6.) \: 1\frac{1}{4} \div \frac{3}{8} + \frac{4}{18} = \frac{5}{4} \times \frac{3}{8} + \frac{4}{18} \\ = (\frac{5}{4} \times \frac{8}{3}) + \frac{4}{18} = \frac{40}{12} + \frac{4}{18 } \\ = \frac{40 + 4}{36} = \frac{44}{36} = \frac{44 \div 4}{36 \div 4} = \frac{11}{9} [/tex]
[answer.2.content]
