解方程。$x ÷ \frac{2}{7} = \frac{7}{16}$
答案:
$x = \frac{7}{16}×\frac{2}{7} = \frac{1}{8}$
解方程。$x + \frac{7}{8}x = \frac{3}{4}$
答案:
$\frac{15}{8}x = \frac{3}{4}$
$x = \frac{3}{4}×\frac{8}{15} = \frac{2}{5}$
$x = \frac{3}{4}×\frac{8}{15} = \frac{2}{5}$
解方程。$4x - 6 × \frac{2}{3} = 2$
答案:
$4x - 4 = 2$
$4x = 6$
$x = \frac{3}{2}$
$4x = 6$
$x = \frac{3}{2}$
解方程。$x ÷ \frac{5}{12} = \frac{3}{10}$
答案:
$x = \frac{3}{10}×\frac{5}{12} = \frac{1}{8}$
解方程。$\frac{5}{36}x = \frac{25}{72}$
答案:
$x = \frac{25}{72}×\frac{36}{5} = \frac{5}{2}$
解方程。$70\%x + 20\%x = 3.6$
答案:
$0.9x = 3.6$
$x = 4$
$x = 4$
解方程。$\frac{5}{6}x - \frac{1}{2}x = \frac{4}{3}$
答案:
$\frac{5}{6}x - \frac{3}{6}x = \frac{4}{3}$
$\frac{2}{6}x = \frac{4}{3}$
$x = 4$
$\frac{2}{6}x = \frac{4}{3}$
$x = 4$
解方程。$\frac{2}{3}x ÷ 0.25 = 12$
答案:
$\frac{2}{3}x = 12×0.25 = 3$
$x = 3×\frac{3}{2} = \frac{9}{2}$
$x = 3×\frac{3}{2} = \frac{9}{2}$
解方程。$\frac{8}{9}x = \frac{1}{6} × \frac{16}{51}$
答案:
$\frac{8}{9}x = \frac{8}{153}$
$x = \frac{8}{153}×\frac{9}{8} = \frac{1}{17}$
$x = \frac{8}{153}×\frac{9}{8} = \frac{1}{17}$
解方程。$\frac{1}{4}x - \frac{1}{5} = 10\%$
答案:
$\frac{1}{4}x = 0.1 + 0.2 = 0.3$
$x = 0.3×4 = 1.2$
$x = 0.3×4 = 1.2$
解方程。$\frac{2}{3}x + \frac{1}{2}x = 42$
答案:
$\frac{4}{6}x + \frac{3}{6}x = 42$
$\frac{7}{6}x = 42$
$x = 36$
$\frac{7}{6}x = 42$
$x = 36$
解方程。$x - 0.375x = \frac{5}{6}$
答案:
$\frac{5}{8}x = \frac{5}{6}$
$x = \frac{5}{6}×\frac{8}{5} = \frac{4}{3}$
$x = \frac{5}{6}×\frac{8}{5} = \frac{4}{3}$
查看更多完整答案,请扫码查看