Verified answer

2•a•50•86=8600а

25•y•4•a=100ау

47•25•x•4=4700х

7•a•25•b•4=700аb

1)2*a*50*86;

2*50*86a;

8600a

2)25*y*4*a

25*4ya=100ya

3)7*a*25*b*4

25*4*7ab=700ab