What is the answer to the equation - 84+15r=3r

r=7

Step-by-step explanation:

-84+15r=3r

Subtract 15r from each side

-84+15r-15r=3r-15r

-84 = - 12r

Divide each side by - 12

-84/-12 = - 12r/-12

7 = r

r = 7

Step-by-step explanation:

So the reason that the answer is 7 is because in this equation you have to get all the r's on one side and the other numbers on the other side of the equal sign.

-84 + 15r = 3r

-84 = - 12r

you then divide both sides of the equal sign by - 12 in order to get rid of the - 12 next to the r variable and when you divide the negative 84 by a negative 12 you will get a positive 7 giving you the answer r = 7