Выполните умножение : 1) 1 3/7 ×2×4/5×3/4; 2) 3 3/4×5/12×8/15; 3) 1 5/6×8 2/11 ×4/9; 4) 2 1/27 ×3 1/5 ×7 4/11.

1) [latex] \frac{10}{7} [/latex] * 2 * [latex] \frac{1}{5} [/latex] * 3= [latex] \frac{2}{7} [/latex] * 2 * 3 = [latex] \frac{12}{7} [/latex] = [latex]1 \frac{5}{7} [/latex] = 1,71429 2) [latex] \frac{15}{4} [/latex] *[latex] \frac{5}{12} [/latex] * [latex] \frac{8}{15} [/latex] = [latex] \frac{5}{12} [/latex] * 2 = [latex] \frac{5}{6} [/latex] = 0,8(3) 3)  [latex] \frac{11}{6} [/latex] * [latex] \frac{90}{11} [/latex] * [latex] \frac{4}{9} [/latex] = 15 * [latex] \frac{4}{3} [/latex] = [latex] \frac{20}{3} [/latex] = [latex]6 \frac{2}{3} [/latex] = 6,66667 4) [latex] \frac{55}{27} [/latex] * [latex] \frac{16}{5} [/latex] * [latex] \frac{81}{11} [/latex] = 11 * 16 * [latex] \frac{3}{11} [/latex] = 16 *3= 48