Ok so what you do is you do 52*24.25=1261. Then you divide 1361.88 by 1261 and you would get 1.08, nut I may be wrong so recheck yourself to make sure
Please provide us with an attachment of image A and B so we can answer your question correctly.
Use the substitution method
s+(-7)-1
-3+(-7)-1
-negative sign and + positive sign= - negative sign
-3-7-1
=-10-1
=-11
Answer: -11