Writing+and+Evaluating+Expressions+and+Equation

An Expression is a formula without an equal sign. You don't solve these, you solve equations. Equations are expressions with an equal sign, meaning solve it. An example of an expression would be 3x*7/9. An equation would be 4x/2*7.19=y. These are just examples. There are complicated and complex problems like 3x*7/9+40/30*3.14^5.