Two Variable Linear Equations

Word problems always make you sweat in stress. One reason for this is because of the confusing questions asked. For instance - try finding an answer to this question - Bob and Martha have 45 chocolates. They gave 15 chocolates to Cathy. How many chocolates does Bob have? All that we know is - Bob and Martha would be left with 30 chocolates together. In this type of questions, we need to take help of variables, as they make our work super easy. How? Let's learn the magical powers of variables in this chapter.