Question

решите уравнение (3/8-×)-1/5=1/20

Answer 1

3/8-х=1/20+1/5
3/8-х=1/20+4/20=5/20=1/4
-х=1/4-3/8=2/8-3/8
-х=-1/8
х=1/8

Answer 2

3/8-x=1/20+1/5              = (1+4)/20=5/20=1/4

3/8-x=1/4

x=3/8-1/4                        = (3-2)/8=1/8

x=1/8