Question

100:(18+(82-10х):6)=5

Answer 1

100:(18+(82-10х):6)=5,
18+(82-10х):6=100:5,
18+(82-10х):6=20,
(82-10х):6=20-18,
(82-10х):6=2,
82-10х=2*6,
82-10х=12,
10x=82-12,
10x=70,
x=7.