Evaluate the double integral by first identifying it as the volume of a solid. \int \intR (5 x) dA, R = {(x, y) | 0 x 5, 0 y 3.

Analyze the solution below. 7 3 x = −2 7 3 x(3 7 ) = −2(3 7 ) x = − 6 7 what property was used to solve the equation? property of opposites division property of equality addition property of equality multiplication property of equality