How do you write algebraic expressions to model quantities

we use a variable to represent any unknown value.   then we look for key words to tell us what operations have been performed.   for example, "sum" indicates addition, "product" is multiplication, "difference" is subtraction and "quotient" is division.   "is" means equals to.   we pay careful attention to the order in which things are listed in the problem, as we want to write them in the same order algebraically.

6 (3) - 4 + 32

hope this

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.