The giraffes at the Liberia zoo eat 75 pounds of food per day, and 52. 5 pounds per day comes from acacia leaves. How much of their diet comes from other types of leaves? Julia, the zookeeper, used the equation 52. 5 x = 75 to find the answer. Which equation is an equivalent equation that can be used to solve the problem? 52. 5 75 = x x 75 = 52. 5 75 – 52. 5 = x x – 52. 5 = 75.