Sagot :
Answer:
C.
Hope its help pa mark ng brainlest po salamat<:
Use #CarryOnLeaning to help our frontliners
Answer:
change all of the sign in the second polynomial, and then add
= 7x2y3z + 7x2y3z
= 14x4y6z
Sorry wala sa choices pero ayan ang tamang sagot. Correct me if I'm wrong. Sana makatulong.