Question

3/4 * 1 1/15 + 1 1/15 * 2 1/2 - 1 3/8 * 1 1/15 обчисліть зручним способом

Answer 1

$\frac{3}{4}*1\frac{1}{15}+1\frac{1}{15}*2\frac{1}{2}-1\frac{3}{8}*1\frac{1}{15}=\frac{3}{4}*\frac{16}{15}+\frac{16}{15}*\frac{5}{2}-\frac{11}{8}*\frac{16}{15}=\frac{4}{5}+\frac{8}{3}-11*\frac{2}{15}=\frac{4}{5}+\frac{8}{3}-\frac{22}{15}=2$