Question

Add:
3a − 4b + 4c, 2a + 3b − 8c, a − 6b + c

Answer 1

Writing the terms of the given expressions (in the same order) in the form of rows with like terms below each other and adding column-wise, we get:

$$\begin{gathered} 3a-4b+4c \\ 2a+3b-8c \\ a-6b+c \end{gathered}$$
___________
$6a-7b-3c$