Решите уравнение : 5целых5/6:3целых1/2=х:15 2)(8х+2,4):3=1,8 3)х:16=3 целых 3/4...

1) $5\frac{5}{6}: 3 \frac{1}{2}=x$
x= $5\frac{5}{6};3 \frac{1}{2}= \frac{35}{6}; \frac{7}{2} = \frac{35}{6}* \frac{2}{7}$
x= $\frac{5}{3}=1 \frac{2}{3}$
2) ...8x+2.4;3=1.8
8x=1.8-2.4;3
8x=-0.2
x=-0.2;8
x=-0.025
3)x;16= $3\frac{3}{4};6 \frac{2}{3}$
x;16= $\frac{3}{4}$
x= $\frac{3}{4}$ *16
x=12
4) -0.2x*(-0.7)=0.84
-0.2x=0.84;(-0.7)
-0.2x=-1.2
x=-1.2;(-0.2)
x=6.