What can i help you with?
when you subtract a negative number from any platitude number the equation changes to addition so you would add the value of the negative number to 1.
Get one x+y=3 to y=x+3 and plug it into x-y=1 and you get x-(x+3)=1. Destitute the x and solve. Once you get what x equals plug it to to either equation for the value of x and solve for y
Answer:
3x + 3
Step-by-step explanation:
First = x
Second = x + 1
Third = x + 2
3x + 3
