Using a calculator, you can find out that

and so that means

so your answer is
Answer:
b
Step-by-step explanation:
There are four properties involving multiplication that will help make problems easier to solve. They are the commutative, associative, multiplicative identity and distributive properties. Multiplicative Identity Property: The product of any number and one is that number. For example 5 * 1 = 5.
Answer:
×=2
Step-by-step explanation:
5x+5=15
5×=10
×=2
.........