Answer:
you +1 on each side
Step-by-step explanation:
a is 30-1=7
b is 32=8
to get from "a" to "b" you simply add one on both sides
32 - 1 = 7
+ 1 +1
------------------
32=8
C) Z
In the right triangle, X and Y are side lengths, while Z is the hypotenuse, so C is the correct answer.
nn
9
12-3=9