5t + 2 = 80 - 7t

Combining like terms:

12t = 78

Dividing by 12:

t = 6.5

Therefore, x1 = 5(6.5) + 2(6.5) = 32.5 + 13 = 45.5
And x2 = 80 - 7(6.5) = 80 - 45.5 = 34.5

So, x1 = x2 = 45.5 = 34.5.