Help me answer the following steps to Time Dilation Derivation. Please be extremely detailed since I am confused over the subject matter. Thank you

Upload your time dilation derivation. All derivations must start from the 2L = v(delta_t) step (or earlie r) and end with the nal time dilation equation. You must show every step - simply copying the steps from the textbook is not enough. Each mathematical step must be accompanied with a verbal explanation of what you did in that step, e.g. "factor out X from the right-hand side of the equation". No credit will be given for late or incomplete assignments. No exceptions, no arguing