3/8x+ 2/9x-3/4x при x=3 1/7

Question

3/8x+ 2/9x-3/4x при x=3 1/7

Answer 1

3/8x+ 2/9x-3/4x=27/72x+16/72x-54/72x=(27+16-54)/72x=11/72x 
11/72x  при x=3 1/7 => 11/72*3 1/7=11/72*22/7=11*7/72*22=7/144