You want to undo the (-9 1/2), so you will add 9 1/2 to each side
Answer:
B.
Step-by-step explanation:
Its letter D
7(19)-21 (x=19)
133-21=112 (RZ)
112+112=224 (RT)
The scale factor for math numbers are the numbers you multiply to get an anwser for its factor.
Ex: factor of 2 is 2,4,6,8 and so on with each number
