Answer:





Step-by-step explanation:
Given

Required
Equivalent expressions
No option were given; So, I will list out some possible equivalent expressions.
Using distributive property:

So, we have:

----- (1)
Another:


Another:


Another:


Another:



Change x to y, and y to x.

solve for y:

Your answer is:

Our objective is to isolate n one side of the equation. The steps are as follows...
a=m-n
(Add n to both sides)
a+n=m-n+n
(The -n and +n cancel out, on the right side of the equation)
a+n=m
(Now subtract a from both sides)
a+n-a=m+a
(The +a and -a cancel out, on the right side of the equation)
n=m+a
Answer:
x = 9; y = 1
Step-by-step explanation: