What is the solution to
x=2-y
3x+3y=6

For X=2-y Look at the following steps.

Step 1. Subtract 2 from both sides



Step 2. Multiply both sides by -1



Step 3. Regroup Terms



Step 4. Switch sides



Done! :) 

For 3x+3y=6 look at the following steps.

To solve for X look at the following steps.

Step 1. Factor out the common term 3



Step 2. Divide both sides by 3



Step 3. Simplify  to 



Step 4. Subtract  from both sides.



Done! now lets solve for y.

Step 1. Factor out the common term 3



Step 2. Divide both sides by 3

x+y=

Step 3. Simplify  to 



Step 4. Subtract  from both sides



Done!

i believe your answer is b.

good luck!

cutie~