Question

Subtract:
−6p + q + 3r + 8 from p − 2q − 5r − 8

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 subtracting column-wise:

$$\begin{gathered} \underline{p-2q-5r-8 \\ -6p+q+3r+8 \\ +---} \\ \underline{7p-3q-8r-16} \end{gathered}$$