Statement Reason</span><span><span><span> <span>12=<span>13</span>x+5 </span></span>Given</span><span><span> <span>7=<span>13</span>x </span></span>Subtraction Property of Equality</span><span><span> 21 = x </span>Multiplication Property of Equality</span><span><span> x = 21 </span><span>Symmetric Property of Equality
By the way, I'm doing the same exam for Geometry as well. There's a lot of proof questions on there which I'm not good at doing for the reasoning part. If you finish the exam before I do, maybe you can message me what the answers are for some of the questions on there so I know if my answers for the questions are incorrect or not.
Besides that, hope the answer above is correct for you.