Question

Suma dintre jumatatea unui numar si sfertul sau este 63 . Care este numarul ? VA ROG MULT !

Answer 1

 

$\displaystyle\bf\\\frac{x}{2}+\frac{x}{4}=63\\\\\frac{2x}{4}+\frac{x}{4}=63\\\\\frac{2x+x}{4}=63\\\\\frac{3x}{4}=63\\\\3x=63\times4\\\\x=\frac{63\times4}{3}\\\\x=21\times4\\\\\boxed{\bf~x=84}$

Answer 2

a : 2 + a : 4 = 63 | × 4

2 × a + a = 252

3 × a = 252

a = 252 : 3

a = 84 => numărul