itu soal mtk anak SMP kelas 1 semesta 1

3.
[tex]a. \\\frac{3}{4} \times(2 \frac{1}{8} + \frac{3}{7} ) \\ = \frac{3}{4} \times (\frac{17}{8} + \frac{3}{7} ) \\ = \frac{3}{4} \times (\frac{119 + 24}{56} ) \\ = \frac{3}{4} \times \frac{143}{56} \\ = \frac{429}{224} \\ = 1 \frac{205}{224} [/tex]

[tex]b. \\ \frac{3}{7} \times (2 \frac{1}{5} - \frac{4}{5} ) \\ = \frac{3}{7} \times ( \frac{11}{5} - \frac{4}{5} ) \\ = \frac{3}{7} \times \frac{7}{5} \\ = \frac{21}{35} [/tex]