Discussion
On solving 2p - 3q - 4r + 6r - 2q + p, answer will be
Answer: C
Collect like terms.
\[ 2p + p = 3p \]
\[ -3q - 2q = -5q \]
\[ -4r + 6r = 2r \]
\[ \therefore\ 3p - 5q + 2r \]
Only terms in the same variable may be combined; \( p \), \( q \) and \( r \) stay separate.
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