MATHEMATICS · Multi-part · CBSE · Mathematics · Algebra Play · Algebra Play
Problem
Consider the linear equation 5x−7=13.
(i) Define what is meant by the solution of a linear equation in one variable.
(ii) Check whether x=4 is a solution of the equation 5x−7=13, showing each step of your working clearly.
(iii) Explain, in not more than three sentences, why it is necessary to carry out such a check after solving any linear equation.