Question

3ab-9ab+7ab and hurry up

Answer 1

Since its adding and subtracting just add the coefficients of similar terms (coefficient is the number in front, term is the coefficient. and variables, similar terms are terms that have the same variables)

3ab-9ab+7ab

3-9=-6: -6ab+7ab

-6+7=1: 1ab or ab :)

Answer 2

Answer:ab

Step-by-step explanation:3-9=-6 +7=1 1ab also equals just ab