Brainly111111
no,you cant add the variable like (5a+4b=9ab) to add that algebraic expression you can only add the like terms but it has no like terms so you have to know the specific value of a and b first
Brainly111111
good,if there is no specific value of a and b no one can answer it properly even if it is the smartest in math industry except giving it a value hehe
Answers & Comments
Answer:
-3ab
5a+4b = 9ab
9ab - 12 is -3ab
Btw is there a specific value in a and b