Please help me with this question thx

Add or subtract polynomial : –12qr? +13rq?

Karen is financing $291,875 to purchase a house. she obtained a 15/5 balloon mortgage at 5.35%. what will her balloon payment be? a. $220,089.34 b. $219,112.46 c. $246,181.39 d. $230,834.98

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much