Question

sa se afle media aritmetica a solutiilor ecuatiei:[x]+ [2x]+[3x]=4x

Answer 1

Răspuns:

x=0

Explicație pas cu pas:

$\frac{(x)+(2x)+(3x)}{3} =4x\\\\\frac{x+2x+3x}{3} =4x\\\\\frac{6x}{3} =4x\\\\2x=4x$

$2x=4x|-4x\\\\-2x=0|:2\\\\\frac{-2x}{2} =\frac{0}{2} \\-1x=0\\-x=0|:-1\\\\\frac{-x}{-1} =\frac{0}{-1} \\x=0$

Succes! :)