Question

решение примера 2(3a-6b)-5(2a-7B)
3(A+2b)+7(3a-b)
0.2(2A-5B)-0.3(4A-8B)
0.1(4k+2c)+0.5(2k-5c)

Answer 1

2(3a-6b)-5(2a-7B)=6а-12b-10a+35b=23b-4a

3(A+2b)+7(3a-b)=3a+6b-21a-7b=-b-18a

0.2(2A-5B)-0.3(4A-8B)=0,4a-b-1,2a+2,4b=-0,8a+1,4b

0.1(4k+2c)+0.5(2k-5c)=0,4k+0,2c+k-2,5c=

=1,4k-2,3c