How do you find #a - 2b + 3c# diminished by #a - 2b - 3c + d#? Algebra Polynomials and Factoring Addition and Subtraction of Polynomials 1 Answer George C. Jun 19, 2015 #(a-2b+3c)-(a-2b-3c+d) = 6c-d# Explanation: #(a-2b+3c)-(a-2b-3c+d)# #=a-2b+3c-a+2b+3c-d# #=a-a-2b+2b+3c+3c-d# #=(1-1)a+(-2+2)b+(3+3)c-d# #=6c-d# Answer link Related questions How do you add two polynomials? How do you subtract two polynomials? How do you add and simplify #3x^2-4x+7# and #2x^3-4x^2-6x+5#? How do you subtract #5b^2-2a^2# from #4a^2-8ab-9b^2#? How do you simplify #(6.9a^2-2.3b^2+2ab)+(3.1a-2.5b^2+b)#? How do you simplify #(-t+15t^2)-(5t^2+2t-9)#? How do you subtract #(-5m^2-m)-(3m^2+4m-5)#? How do you add two polynomials if they don't have like terms? How do you simplify #(3a+4b)-(-6a-3b)#? How do you subtract #(x^2-8x+7)-(6x^2+7x-3)#? See all questions in Addition and Subtraction of Polynomials Impact of this question 3905 views around the world You can reuse this answer Creative Commons License