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Gramadaalex36
a fost răspuns

Să se rezolve ecuația:
[tex] \frac{1}{5} \times x + \frac{3}{5} \times x = 16[/tex]
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Răspuns :

ALXHXO

Inmultim ecuatia cu 5 si obtinem:

x+3x=80

4x=80

x=80/4

x=20;

FORTA HXO!

CosmyCrina

[tex]\frac{1}{5} *x+\frac{3}{5} *x=16\\\\\frac{x}{5}+\frac{3x}{5} =16\\\\\frac{4x}{5}=16\\\\4x=16*5\\\\4x=80 \\\\x=80:4\\\\x=20[/tex]

*sau*

[tex]\frac{1}{5}*x +\frac{3}{5}*x=16\\\\\frac{x}{5} +\frac{3x}{5} =16[/tex]   (dam factor comun 5)

[tex]\frac{x}{5} +\frac{3x}{5}= \frac{80}{5} |*5\\\\x+3x=80\\\\4x=80\\\\x=80:4\\\\x=20[/tex]

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