Express the unknown factor as a mixed number:25n = 70

Lecture 3: Example: Find the point at which the line x=t, y=2-t, z=1+3t intersects the plane x+y+z=3. Solution: plug in x=t, y=2-t and z=1+3t into the plane equation x+y+z=3. t+(2-t)+(1+3t)=3...