Răspuns:
Rezolvarea e mai jos!
Succes la ore!!!
Explicație pas cu pas:
a) [tex]\frac{2}{x} =\frac{8}{4}[/tex]
2*4=x*8
8=x*8
8:8=x
1=x
b) [tex]\frac{x}{27}=\frac{2}{3}[/tex]
x*3=27*2
x*3=54
x=54:3
x=18
c) [tex]\frac{2}{5} =\frac{5}{x}[/tex]
2*x=5*2
2*x=10
x=10:2
x=5
d) [tex]\frac{9}{0,8} =\frac{x}{1,6}[/tex]
9*1,6=0,8*x
14,4=0,8*x
14,4:0,8=x
18=x
e)[tex]\frac{x}{4} =\frac{3}{10}[/tex]
x*10=4*3
x*10=12
x=12:10
x=1,2
mariamateicristian
