Question

2p+3q-4r+1 from 7p -4q +r+2

Answer 1

Answer:

5p - 7q + 5r + 1

Step-by-step explanation:

7p - 4q + r + 2 - (2p + 3q - 4r + 1)

7p - 4q + r + 2 - 2p - 3q + 4r - 1

5p - 7q + 5r + 1