1. ## Need help solving this equation...! (please) :D

my algebra teacher barely speeks a word of english and her way of explaining things is difficult to understand, so i thought i'd ask u guys!

I tried and this is what i got!

Find value of X

X + X/10 = 3Y - X
2X + X/10 = 3Y
2X + X = 30Y
3X = 30Y
X = 3Y

is that correct?? because my teacher says it isnt, but i dont understand where i went wrong! :S

thanx a million!!

2. Hola

Supongo que deseas sacar $x$ en función de $y:$

$x + \frac{x}
{{10}} = 3y - x \implies 2x + \frac{x}
{{10}} = 3y \implies \frac{{21x}}
{{10}} = 3y \implies \frac{{7x}}
{{10}} = y.$

Finally $x = \frac{{10}}
{7}y.$

3. ## Thank U!

mchisimas gracias!!!