Question

решите уравнение (x -2,5) 4 1/5 =6,2

Answer 1

(х-2,5)*4 1/5=6,2
х-2,5=6 1/5:4 1/5
х-2 1/2=31/5:21/5
х-5/2=31/21
х=31/21+5/2
х=62/42-105/42
х=-43/42
х=-1 1/42