Pair Of Linear Equations In Two Variables A statement of equality of two algebraic expressions, which involve one or more unknown quantities is known as an equation. If there are two unknown quantities then equation is called linear equation in two vari…

Cross Multiplication Method For Solving EquationsBy the method of elimination by substitution, only those equations can be solved, which have unique solution. But the method of cross multiplication discussed below is applicable in all the cases; whether…

Equations Reducible To A Pair Of Linear Equations ExamplesExample 1:    Solve the following system of equations \(\frac { 1 }{ 2x }\) – \(\frac { 1 }{ y }\) = – 1; \(\frac { 1 }{ x }\) + \(\frac { 1 }{ 2y }\) = 8 Sol.    We have, \(\frac { 1 }{ 2x }\) –…

Algebraic Methods Of Solving A Pair Of Linear EquationsSometimes, graphical method does not give an accurate answer. While reading the coordinates of a point on a graph paper, we are likely to make an error. So, we require some precise method to obtain a…