Solve for ' t ' : A = (vf - vi) ) / t
Multiply each side by ' t ' : A t = (vf - vi)
Divide each side by ' A ' : t = (vf - vi) / A
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Solve for ' vi ' : A = (vf - vi) ) / t
Multiply each side by ' t ' : A t = vf - vi
Subtract ' vf ' from each side : A t - vf = - vi
Multiply each side by ' -1 ' : - A t + vf = vi ______________________________________
Solve for ' vf ' : A = (vf - vi) ) / t
Multiply each side by ' t ' : A t = vf - vi
Add ' vi ' to each side: A t + vi = vf
