Free points whats 10000000-10000000?

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

How do i simply this radical expression?

Asoftball team played ten games, scoring 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 runs. they lost by one run in exactly five games. in each of their other games, they scored twice as many runs as their opponent. how many total runs did their opponents score?