what is the answer to this? 2x+y=13

Question

solve the system of equations using subtraction

 

Answer 1

Billy, you need two equations to solve this.  A system has to have at least two equations -- two variables, two equations.  What is the other equation?  You then put the equations in the same form, and if you get rid of one variable by subtracting, do it.  If you have to multiply one equation to make it so when you subtract one variable will disappear, than do that.

Keep working!

Mary