Question

To use the elimination method, you can add the two equations in a system of equations to eliminate one of the variables.

Answer 1

Answer:

x=1 y=19

Step-by-step explanation:

Let's solve your system by elimination.

−9x+y=10; 10x−y=−9

−9x+y=10

10x−y=−9

Add these equations to eliminate y:

x=1

Then solve x=1 for x:

x=1

Now that we've found x let's plug it back in to solve for y.

Write down an original equation:

−9x+y=10

Substitute1forxin−9x+y=10:

(−9)(1)+y=10

y−9=10(Simplify both sides of the equation)

y−9+9=10+9(Add 9 to both sides)

y=19

Hope this helps, I don't really get the answer choices though....