Question

Решите уравнение:
1целая : 2 целые 7/9=х+4целые 2/5

Answer 1

1/(2*7/9)=х+4*(2/5)
1/(25/9)=х+4*(2/5)
(9/9)/(25/9)=х+4*(2/5)
(9/9)*(9/25)=х+4*(2/5)
9/25=х+12/5
х=9/25-12/5
х=(9-60)/25
х=-51/25
х=-2*(1/25)
х=-2,04