Answer:
The equivalent expression can be given as:
⇒ 
Step-by-step explanation:
Given expression:

To write an equivalent expression:
Solution:
In order to write an equivalent expression, we will combine the like terms. By like terms, we mean the terms with the same variable constant.
For example :
and
are like terms.
We have:

Combining like terms :
⇒ 
⇒ 
Thus, the equivalent expression can be given as:
⇒ 
(x-center)^2+(y-center)^2=r^2
x^2+y^2=r^2
(5)^2+(-12)^2=r^2
25+144=r^2
169=r^2
r=13
Answer:
y =3x-7
Step-by-step explanation:
y - 2 = 3(x-3)
y -2 = 3x -9
y = 3x-7
Answer:
x =40
Step-by-step explanation:
5= 1/5x-3
Add 3 to each side
5+3 = 1/5x -3+3
8 = 1/5x
Multiply by 5
8*5 = 1/5x *5
40 =x
Answer:
-2
Step-by-step explanation: