at a library book sale, hardcover books sell for $4 and paperbacks sell for $2. The expresstion 4b+2b represents the total cost for b hardcover books and b paperbacks. Write a simpler expression that is equivalent to 4b+2b

6b is a simpler expression that is equivalent to 4b+2b.

Step-by-step explanation:

Given : At a library book sale, hardcover books sell for $4 and paperbacks sell for $2.

The expression 4b+2b represents the total cost for b hardcover books and b paperbacks.

We have to write a simpler expression that is equivalent to 4b+2b.

Equivalent expression are expression which are different in seeing but when we solve both we get the values same as the original expression.

Given expression is 4b+2b,

We can take 2b common from terms to get an equivalent expression as,

4b+2b = 2b (2+1) = 2b (3) = 6b.

Thus, 6b is a simpler expression that is equivalent to 4b+2b.

Answer : 6b

Step-by-step explanation: b (4+2)