Final answer to the problem
Step-by-step Solution
Learn how to solve equivalent expressions problems step by step online. Simplify the expression 15a^2-6ab-8a^2+20-5ab+-31a^2-ab. Subtract the values 20 and -31. Combining like terms 15a^2 and -8a^2. Combining like terms 7a^2 and a^2. Combining like terms -6ab and -5ab.