Ok, so, I am looking up how to solve 4x + 8 = -7x + 19 and I scrolled down to my search engine's answer and it said x = 1. Ok, well, then I scrolled down a little further and clicked on a link and they showed you how to do it but the second website said x = -1. Which one is right? Please help, I really struggle with math a lot and now these two different answers are confusing me even more. If you can also explain why which of the two answers are correct that would be amazing! If you can't answer please comment! Thank you so so so much!!!

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Change negative exponents to positive. then solve. round to four decimal places

Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.