What is the result of multiplying the second equation below by 13 and then adding to the first equation. −12x+9y=7 9x−12y=6 (1 point) Responses 15x+13y=9 15 x plus 13 y is equal to 9 −9x+13y=5 negative 9 x plus 13 y is equal to 5 −15x+5y=9 negative 15 x plus 5 y is equal to 9 −9x+5y=9
To find the result of multiplying the second equation by 13 and adding it to the first equation, you need to perform the following operations:
Multiply the second equation by 13: 13(9x - 12y) = 117x - 156y = 78
Now, add the first equation to the result:
-12x + 9y + 117x - 156y = 7 + 78
Combining like terms:
105x - 147y = 85
So, the result of multiplying the second equation by 13 and adding to the first equation is:
105x - 147y = 85