RA-solution2


 * Example: #2

2x+y= 5 y= x-4

Step 1: [ solve for the second equation ] y= x-4

Step 2: [ substititude -4 for y in the first equation ] [ simplify for x ] 2x+y= 5 2x+( x-4 ) = 5

Step 3: [ Add 4 for both sides ] 3x-4= 5 __+4__** **__//+//4__ 3x = 3 x= 3

Step 4: [ write one of the original equations ] [ substitude 3 for x ] y= x-4 y= 3-4 y= -1

Step 5: [ write the solution as an orderd pair ] ( 3,-1 )**