Question

Помогите решить 0,6x+7/9*0,4x+8=x

Answer 1

$0,6x+\frac{7}{9}*0,4x+8=x\\\frac{3}{5}x+\frac{7}{9}*\frac{2}{5}x+8=x\\\frac{3}{5}x+\frac{14}{15}x+8=x\\27x+14x+360=45x\\41x+360=45x\\41x-45x=-360\\-4x=-360\\x=90$