Ritchielynviz Ritchielynviz Math Answered B. Find the sum of the following polynomials.1. 10mn and -15mn ____________________________________________ 2. -7a2and -8a2____________________________________________3. 6(x+3) and -7(x+3) ____________________________________________4.14ab and -14ab ____________________________________________5. 0.5 xyz and 1.5 xyz ____________________________________________