Question

УПРОСТИТЕ
-7(8х-3)-12
0,3(5у-4)+1,2(у-6)
8/15(2 1/4а-7 1/2b)-7/30*(4 2/7a-8 4/7b)

Answer 1

-7(8x-4)-12=

-56x+9

0,3(5y-4)+1,2(y-6)=

0,3*(9x-28)

8/15(2 1/4a-7 1/2b)-7/30*(4 2/7a-8 4/7b=

1/5*(a-10b)