C50 BE FRIENDS TONIGHT

Dralex looked at the whiteboard and then turned her eyes to Paul. "You must add your sum correctly to get the correct answers. The sum is the same as addition, and the minus is the same as subtraction. You must always remember this, especially when you are working on word problems—" Dralex's eyes were on the whiteboard now, and the moment he turned at Paul, she said, "check your textbook