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3supra 5 ori x plus 12 egal x

Răspuns :


[tex] \frac{3}{5} \times + 12 = x \\ \frac{3}{5} \times 12 = \frac{3 \times 12}{5} = \frac{39}{5} [/tex]
[tex]x = \frac{39}{5} [/tex]
[tex]x = 7.8[/tex]