Answer:
ummm i tried but.....
Step-by-step explanation:
Answer:
8x+2y+3x-18y+x^2
final answer: x^2+11x-16y
*edited*
Answer:

Step-by-step explanation:
Let
x-----> the number of girls
y-----> the number of boys
we know that
-----> equation A

isolate the variable y
-----> equation B
Substitute equation B in equation A


