7.2.33
x = -3 + 2t1
y = -2 + 3t1
z = 6 - 4t1
x = 5 + t2
y = -1 -4t2
z = -4 + t2
-3 + 2t1 = 5 + t2
-2 + 3t1 = -4 - 4t
6 - 4t1 = -4 + t2
-14 + 11t1 = 19
11t1 = 33
t1 = 3
P = (3, 7 ,-6)
7.2.35