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Daca se aduna un numar cu jumatatea si cu sfertul sau,se obtine suma 147.Afla numarul

Răspuns :

[tex]\sf ^{4)}x+^{2)}\frac{x}{2} + \frac{x}{4}=^{4)}147 \\ \\ \frac{4x}{4}+ \frac{2x}{4}+ \frac{x}{4} = \frac{588}{4}|*4 \\ \\ 4x+2x+x=588 \\ \\ 7x=588 \\ \\ \boxed{\sf x=84} [/tex]
a+[tex] \frac{a}{2} [/tex] + [tex] \frac{a}{4} [/tex]=147 => [tex] \frac{4a+a+2a}{4} [/tex] = 147 => 7a= 588 => a= 84