Question

Решите уравнение.
-2,3х+(2,8+9,3х)=9,8
Пж помогите плизз 15б​

Answer 1

$\displaystyle \tt -2,3x+(2,8+9,3x)=9,8\\\displaystyle \tt -2,3x+2,8+9,3x=9,8\\\displaystyle \tt 7x+2,8=9,8\\\displaystyle \tt 7x=9,8-2,8\\\displaystyle \tt 7x=7\\\displaystyle \tt x=7\div7\\\displaystyle \tt \bold{x=1}$