Question

помогите пж решите уравнение

Answer 1

$1,9-Big (5 frac{3}{4}-(x+1)Big )=3,15\\1,9-Big (5,75-(x+1)Big ) =3,15\\5,75-(x+1)=1,9-3,15\\5,75-(x+1)=-1,25\\x+1=5,75+1,25\\x+1=7\\x=7-1\\x=6$