Question

what should be added to 5p + 4q - r to get 4q - r ?

Answer 1

(4q-r)-(5p+4q-r)

4q-r-5p-4q+r

(4q-4q)+(-r+r)+(-5p)

-5p

SO , -5p should be added to 5p+4q-r to get 4q-r.

...hope it helps u.❤❤❤