9 is the value of each side. There are 7 sides so 63 divided by 7 is 9.
-13 (q + 4) = 7q + 16
I think to solve it you do this first:
-13q + -52 = 7q + 16
And then I think you do:
-6q + -36
And thats all I can remember sorry ):
Or
That -6q + -36 might be the answer I think (:
Hope I could help (:
Answer:
988
Step-by-step explanation:
12819=
Yx ..................................
