Question

Можна ответ)) 2,5x+9,5=3-x

Answer 1

$\displaystyle \tt 2,5x+9,5=3-x\\\\ \displaystyle \tt 2,5x+x=3-9,5\\\\ \displaystyle \tt 3,5x=-6,5\\\\ \displaystyle \tt x=-\frac{13}{7}\\\\ \displaystyle \tt x=-1\frac{6}{7}$

ОТВЕТ:

$\displaystyle \tt -1\frac{6}{7}$