Question

Решить уравнение х-2 3\4=4 5\6 7\8 * х=2 3\16

Answer 1

Х - 2 3/4 = 4 5/6
х = 4 5/6 + 2 3/4 = 4 10/12 + 2 9/12 = 6 19/12 = 7 7/12
х = 7 7/12

7/8 · х = 2 3/16
х = 2 3/16 : 7/8 = 35/16 · 8/7 = 5/2 = 2 1/2

Answer 2

$x-2 \frac{3}{4} =4 \frac{5}{6} \\ x=2 \frac{3}{4} +4 \frac{5}{6} \\ x= \frac{11}{4} + \frac{29}{6} \\ x= \frac{33}{12}+ \frac{58}{12} \\ x= \frac{33+58}{12} \\ x= \frac{91}{12} \\ x=7 \frac{7}{12}$
$\frac{7}{8} *x=2 \frac{3}{16} \\ \frac{7}{8} *x= \frac{35}{16} \\ x= \frac{35}{16} :\frac{7}{8} \\ x=\frac{35}{16} *\frac{8}{7} \\ x= \frac{5}{2} \\ x=2 \frac{1}{2}$