Question

Aflati pe x:
a) x/9=7/14
b) 75/9=x9
c) 184/x=92/230​

Answer 1

Explicație pas cu pas:

a)x/9=7/14

x/9=1/2

x=9/2=4,5

b)75/9=x/9

25/3=x/9

x=25×9/3

x=25×3

x=75

c)184/x=92/230

184/x=46/115

x=184×115/46

x=460

Answer 2

Răspuns:

Explicație pas cu pas:

$a) \frac{x}{9} =\frac{7}{14} |*9\\x=\frac{9}{1} *\frac{7}{14} \\x=\frac{9}{2}$

$b) \frac{75}{9} =9x|*9\\75=81x\\81x=75|:81\\x=\frac{75}{81} \\\\x=\frac{25}{27}$

$c) \frac{184}{x} =\frac{92}{230} |:184\\x=\frac{92}{230} :\frac{184}{1} \\\\x=\frac{92}{230} *\frac{1}{184} \\\\x=\frac{1}{460}$