Question

2•(4,3а-40с)+2а•0,7 при а=20,с=0,3

Answer 1

8.6a-80c+1.4a=10a-80c=200-24=176

Answer 2

При a=20,c=0,3,то 2*(4,3a-40c)+2a*0,7=8,6a-80c+1,4a=10a-80c=10*20-80*0,3=200-24=176