Question

2x + 5 = 9 решите плез​

Answer 1

$2x + 5 = 9\\2x=4\\x=2$

Answer 2

$\displaystyle \tt 2x+5=9\\\displaystyle \tt 2x=9-5\\\displaystyle \tt 2x=4\\\displaystyle \tt x=4\div2\\\displaystyle \tt \bold{x=2}$