Question

(x/4)+{(3x)/6}+x=21
X=12​

Answer 1

Respuesta:

$x=12$

Explicación paso a paso:

$\frac{x}{4} +\left( \frac{3x}{6} \right)+x=21\\\\\frac{3x+6x+12x}{12}=21\\\\\frac{21x}{12}=21\\\\x=21*\frac{12}{21} \\x=12$