Răspuns :
Răspuns:
[tex]x = \frac{2}{10} =\frac{1}{5}[/tex]
Explicație pas cu pas:
Ce se cere:
Aflati x din urmatoarea relatie: [tex]\frac{1}{2} = x + \frac{3}{10}[/tex] .
Aducem la acelasi numitor, acesta este 10.
[tex]\frac{^{5)}1}{2} = x + \frac{3}{10} \\[/tex]
[tex]\frac{5}{10} = x + \frac{3}{10}[/tex]
[tex]x = \frac{5}{10} - \frac{3}{10} =\frac{2}{10}[/tex]
[tex]x = \frac{2}{10} =\frac{1}{5}[/tex]
Succes!
Salutare!
[tex]\bf \dfrac{1}{2} =x+ \dfrac{3}{10}[/tex]
[tex]\bf \dfrac{1}{2}-\dfrac{3}{10} = x[/tex]
[tex]\bf \dfrac{1\cdot5}{2\cdot5}-\dfrac{3}{10} = x[/tex]
[tex]\bf \dfrac{5}{10}-\dfrac{3}{10} = x[/tex]
[tex]\bf \dfrac{5-3}{10} = x[/tex]
[tex]\bf \dfrac{2}{10} = x[/tex]
[tex]\bf \dfrac{\not2}{\not10} = x[/tex]
[tex]\boxed{\bf x = \dfrac{1}{5} }[/tex] sau [tex]\boxed{\bf x =0,2 }[/tex] sau [tex]\boxed{\bf x = 5^{-1} }[/tex]