5×7/2
please answer me​

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1