Question

решите уровнение :
3 1/5 + 2 2/ 5 - х = 3 1/10 - 1 1/5

Answer 1

(3*5+1)/5 + (2*5+2)/5 - х=(3*10+1)/10 - (5*1+1)/5;

(16+12)/5 - х=(31-12)/10;

28/5 - х=19/10;

х=28/5 - 19/10=(56-19)/10=37/10;

х=3целіх 7/10