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.
a. (i) Identify the arithmetic error in Rina’s working.
b. (ii) Correct the checking process and state whether x=4 satisfies the equation.