X+ 2x + 2 21/8 * x = 360 помогите

Question

X+ 2x + 2 21/8 * x = 360 помогите

Answer 1

X+2x+2 21/8×x=360
3x+21/4 x=360
12+21x=1440
33x=1440
x=480/11=43 7/11
(Вроде так)