Question

Решите пример пж СРОЧНО!!!!

Answer 1

- 5/8(3,2m-1 3/5n)-7,2( - 4/9m+2,5n) = - 5/8* 16/5m + 5/8*8/5n + 36/5*4/9m - 36/5*5/2n= - 2m+ n+ 16/5m-18n= -2m+n+3,2m-18n= 1,2m-17n

m=-10 n= -0,1

1,2*(-10)-17*(-0,1)= -12+1,7= -10,3