1/2a+3/8b-2/3a-b при а=3, b=4

Question

1/2a+3/8b-2/3a-b при а=3, b=4

Answer 1

Упростим
(1/2а-2/3а)+(3/8в-в)=(3/6а-4/6а)+(3/8в-8/8в)=-1/6а-5/8в
при а=3,в=4
-1/6*3-5/8*4=-3/6-20/8=-1/2-5/2=-6/2=-3
ответ -3