Question

1)x+19=12 2)-25-x=-17 3)3.2-x=-5.1
Помогите решите срочно с решением​

Answer 1

$\displaystyle \tt 1) \: x+19=12\\\displaystyle \tt x=12-19\\\displaystyle \tt \bold{x=-7}$

$\displaystyle \tt 2) \: -25-x=-17\\\displaystyle \tt -x=-17+25\\\displaystyle \tt -x=8\\\displaystyle \tt \bold{x=-8}$

$\displaystyle \tt 3) \: 3,2-x=-5,1\\\displaystyle \tt -x=-5,1-3,2\\\displaystyle \tt -x=-8,3\\\displaystyle \tt \bold{x=8,3}$