Fill in the blanks to correctly complete the sentence.
[[9,-7],[4,15]]=[[x+7,-7],[4,y+7]]
For the given statement to be true, the value of x must be
Fill in the blanks to correctly complete the sentence
9-7 x+7-7 415 4y+7
For the given statement to be true, the value of x must be, and the value of y must be (Simplify your answers.)