An equation is a mathematical statement that two things are equal. It consists of two expressions, one on each side of an 'equals' sign.
An equation says that two things are equal. It will have an equals sign "=" like this: 7 + 2 = 10 − 1 That equation says: what is on the left (7 + 2) is equal to what is on the right (10 − 1) . So an equation is like a statement "this equals that" .
Here we have , b-19=27 or . Let's solve it step by step: