1)-12(5/6a-1/4b+7/24c-1/12)
-10a+3b-3,5c+1
2)(16a+8b-5/9c-4/9d)*(-9/32n)
-4,5an-2,25bn+5/32cn+1/8dn
номер 9
453,675
873,981
105,135
774,810
номер 10
4