Question

УПРОСТИТЬ выражения

-8•(х-3)+4•(х-2)-2•(3х+1)
5/9•(3,6а-3 3/5 d)-3,5•(4/7-0,2d)

Answer 1

1) -8×(х-3)+4×(х-2)-2×(3х+1)=-8х+24+4х-8-6х-2=-10х+14

Answer 2

5/9(3,6а-3 3/5 d)-3,5(4/7a-0,2d)

Answer 3

Решм

Answer 4

5/9(3,6а-3 3/5d)-3,5(4/7a-0,2d)=5/9(3 6/10a-3 3/5d)-3 5/10(4/7a-2/10d)=5/9*36/10a -18/5d-35/10*4/7a-2/10d=2a-36/10d-2a-2/10d= -36/10d-2/10d= -38/10d= -19/5d