Question

B) 12/8= x/4

C) x+2/3=4/5

Answer 1

$B) \frac{12}{8} =\frac{x}{4}$

$\frac{12(:4)}{8(:4)} =\frac{x}{4}$

$\frac{3}{2} .4=x$

$\frac{12}{2}=x$

6 = x

x = 6

$C) x +\frac{2}{3} =\frac{4}{5}$

$x=\frac{4}{5} -\frac{2}{3}$

3, 5 I 3

1,  5 I 5

1,  1  MMC 3 . 5 = 15

$x=\frac{12-10}{15}$

$x=\frac{2}{15}$

x = 0, 13