An equation includes an equal sign (e.g., 3x + 2xy = 17) and states that two expressions are equal. Solving an equation means finding the value(s) of the variable that makes the equation true. To do this, isolate the variable on one side of the equation. This can be done by following the same simple steps.
You can perform any operation on an equation as long as you do it to both sides of the equation.
Mathematic expressions and equations can be used to model real-life situations. Often these situations are presented as word problems that can be translated into mathematical terms and solved. No matter the problem, this process can be completed using the same steps:
The table below gives some common phrases and their translation into mathematical terms.