I need help w this. please show how you got the answer ​

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

How many grams the dog will eat in 3 days?