The shanghai MaglevMail train is one of the fastest trains in the world, traveling about 2144 miles in 8 hours
1 answer:
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First, let's use the Distributive Property to make our equation easier to solve. Remember that the Distributive Property says the following:
Using this, we can multiply the 7 out to the and 3. This gives us:
Now, let's solve for :
We can see that there is one solution for this equation because is equal to one definite value after solving. Thus, our answer is A, one solution.
