Question

what should be added to 2p-q+r to make it p+q-2r

Answer 1

$( - p + 2q - 3r)$
is your answer

Answer 2

First let us see each one individually,

Here, to make 2p to p, we have to add -p

Then, to make -q to q, we have to add 2q

Now to make r to -2r, we have to add -3r

So we got our final answer ie, we have to add (-p+2q-3r) to (2p-q+r) to make it (p+q-2r)......

Hope it helps!!!

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