I need help asap​

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

5/6+7/8what is the answer sealsdbdbshd

For each polynomial, determine the degree and write the polynomial in descending order. a. –4x^2 – 12 + 11x^4 b. 2x^5 + 14 – 3x^4 + 7x + 3x^3