Question

1,5(-2,4a+3.8b)-1,6(2,5a-b). Якщо а= 2, b=-3

Answer 1

1,5(-2,4a+3.8b)-1,6(2,5a-b)=

=-3.6a+5.7b-4a+1.6b=

=-7.6a+7.3b

Якщо а= 2, b=-3

-7.6*2+7.3*(-3)=

=-15.2-21.9=

=-37.1