What is 6n+5=4n-5n?

I Tried to solve and I could'nt find an accurate answer.

Find their total volume if x=10 feet, y=12 feet, and z = 7 feet

Eli walk from her house to a friends house in one hour. She can travel the same Distance on her bicycle in 15 minutes. If she rides 6 mph faster than she can walk, What is her speed on the bicycle?

Suppose that you invest $400 in a bank account that has APR of 6% and it is compounded monthly (12 times a year) How much money will you have in your account after 1 year? What is the amount of interest earned in 1 year?

Explain why the equation of a horizontal line is y = b.

A shape of a trapizoid has an area of 4,455 square centimeters

The quotient of 5:6 rounded to the nearest hundreth

How do you long divide with 3 digits?

Is 1/2 and 2/4 are equivalent fractions?

Let f (x) = 1-x and g (x) = x^3+4, find (f°g) (0)

Which ordered pair is a solution of the equation? 5 - 2g = 18