Pancho made fudge brownies and peanut butter brownies. Each batch of fudge brownies makes 4 pans. Each batch of peanut butter brownies makes 7 pans. Pancho made 6 batches and ended up with 39 pans of brownies. How many batches of each type of brownie did he make?
______batches of fudge brownies
_____ batches of peanut butter brownies