Write the sum of numbers as a product of their GCF and another sum

Write the sum of numbers as a product of their GCF and another sum. 75 + 90. What is the GCF of 75 and 90? _______ Write each number as a product of the GCF and another number. Then use the Distributive Property to rewrite the sum.
(□×□)+(□×□)=(□)×(□+□)