Question

5x-y × 3 2x-y = 135. In words, 5 raised to x-y multiplied by 3 raised 2x-y

Answer 1

${5}^{x - y} \times {3}^{2x - y} \\ = {5}^{x - y} \times {3}^{x + x - y} \\ = {5}^{x - y} \times {3}^{x} \times {3}^{x - y} \\ = {15}^{x - y} {3}^{x}$