Х/9=600/100 28/х=400/100 х-9(25+19)=36

Question

Х/9=600/100
28/х=400/100
х-9(25+19)=36

Answer 1

Х:9=600/100
х:9=6
х=9*6
х=54.

28:х=400/100
28:х=4
х=28:4
х=7.

х-9(25+19)=36
х-225+171=36
х-54=36
х=54+36
х=90.