While checking whether is a solution of the equation , Rina wrote the following…
MATHEMATICS · Multi-part · CBSE · Mathematics · Algebra Play · Algebra Play
Problem
While checking whether x=4 is a solution of the equation 3x−2=10, Rina wrote the following steps:
3(4)−2=12−2=8∴8=10
Hence, she concluded that x=4 is not a solution.
(i) Identify the arithmetic error in Rina’s working.
(ii) Correct the checking process and state whether x=4 satisfies the equation.