Write another way to add these numbers using the associative property and then state the sum. (40+7)+13​

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

If you could answer these your a life saver

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.