Question

How do i simplify 2a x 3b x 4c

Answer 1

I don't think you can, because the letters are all different

Answer 2

In the expression 2a x 3b x 4c,
2, 3 and 4 are the coefficients and a, b and c are the variables.
When such a multiplications is given, multiply the coefficients together and the variables together.

So the product of coefficients = 2×3×4 = 24
the product of variables = a×b×c = abc

Finally multiply the product of coefficients and product of variables.
Final product = 24×abc = 24abc

So 24abc is the answer.