Statements Reason (r * 4s)/2 = 1 5 2 * (r + 4s)/2 = 2(5 + t) r + 4s = 2(5 + t) r + 4s - 10 + 2t Given b Division Prop of Equality c Equivalent Equation d Addition Prop of Equality Transitive Property f Equivalent Equation 9 Distributive Property r + 4s - 4s - 10 + 2t - 4s r = 10 + 2t - 4s r = 2(5 + t - 2s)