Define Cramer's rule: How Cramer's rule is used to solve a system of equations? There are different ways to solve a single problem in math. This is why it is so complicated and easy at the same time. One can solve a problem by the method of one’s liking. For example, there are many ways to write an equation i.e. slope-intercept form , standard form, point-slope form, etc. Similarly, equations are also solved using different methods. One of such method is Cramer’s rule and it is the most favored one. What is Cramer’s rule? Cramer’s rule is used to solve a system of complex mathematical equations. It is named after a Genevan mathematician, Gabriel Cramer . In Cramer’s rule, we find the value of an unknown variable, let’s say z, by replacing the z column of the matrix and finding its determinant. After that, dividing that with the value of the original matrix’s determinant. Drawback: It is an easy way but it can be inefficient and tiresome when the s...