Plz help I really need it

1) x+9=12 (=3)

2) s-1=10 (s=11)

3) 3-z-11 (−−8)

4) 5+y=7 (y=2)

5) 8-2+q (q+6)

6) 6=n-4 (n=20)

7) r-2=5 (r=7)

8) 6=m+6 (m-2)

9) p+7=8 (p=1)

10) 4+a=13 (a=7)

Enjoy!

definition: a circle is the  set of all points in a plane that are equidistant  from a given  point  called the center of the circle. we use the symbol ⊙ to represent a circle. the a line segment from the center of the circle to  any point  on the circle is a radius of the circle.

step-by-step explanation:

i googled it and this is what i got i don't know how it is. sorry.