*Please answer fast its my turn to give an answer in 2 min my clock ir running yikes Please help for brianliest*(08.06) 
 An unknown number y is 15 more than an unknown number x. The number y is also x less than 8. The equations to find x and y are shown below. 
 y = x + 15 
 y = −x + 8 
 Which of the following statements is a correct step to find x and y?
 Multiply the equations to eliminate y.
 Add the equations to eliminate x.
 Write the points where the graphs of the equations intersect the x-axis.
 Write the points where the graphs of the equations intersect the y-axis.