Difficulty of Calculus (I-III) vs Linear Algebra

I've had Calculus III in the past, but I ended up making a D in the class due to a lower grade earlier in the semester, so I have to retake it again. This semester I'm set to retake Calculus III and Linear Algebra. Looking at it from a comparison standpoint, how does Linear Algebra compare to the first three classes of the Calculus Series, and which on would it line up with comparing difficulty?

Thanks!!!

Usually people find Linear Algebra easier than calculus and it is even part of some high school honors courses. Solve for X, Y, and Z for three equations in three unknowns, and usually the exponents of the variables are 1. (not quadratic, cubed, etc.)

Can you visualize a plane when someone gives you an equation like aX + bY + cZ = d? if so, you will find linear algebra easy. Even if not, if you like solving those equation sets, it will be easy.