Adler and Erika solved the same equation using the calculations below. Adler’s Work Erika’s Work StartFraction 13 over 8 EndFraction = k + one-half. StartFraction 13 over 8 EndFraction minus one-half = k + one-half minus one-half. StartFraction 9 over 8 EndFraction = k. StartFraction 13 over 8 EndFraction = k + one-half. StartFraction 13 over 8 EndFraction + (negative one-half) = k + one-half + (negative one-half). StartFraction 9 over 8 EndFraction = k. Which statement is true about their work?