Solve equations with numeric denominators, e.g. x/3 + 2 = 5, (x + 2)/3 = 4 and (2x − 1)/3 = (x + 2)/4, multiplying every term by the common denominator, whole-number terms included. Unknowns in the denominator lead to quadratics and are Higher via A18 rearrangement. Both tiers. (A17)