Question

I want to know is my answer right!
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
9x + 11y = 86
9x – 2y = -5

Answer 1

9x+11y=86
9x-2y=-5
13y=91
have to divide BOTH sides by 13, so y = 91/13 and y = 7.

Now, plug 7 in for y in either equation to get x: 9x - 14 = -5 <==> 9x = 9 <==> x = 1

So, the solution is (1,7)

Answer 2

Your solution is correct

Answer 3

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