Answer:  
Step-by-step explanation:
 1. Substitute  into first equation and solve for "x" in order to find the x-intercept of the first line:
 into first equation and solve for "x" in order to find the x-intercept of the first line:
 
 2. Substitute  into the first equation and solve for "y" in order to find the y-intercept of the first line:
 into the first equation and solve for "y" in order to find the y-intercept of the first line:
 
Knowing that first line passes through the points  and
 and  , you can graph it.
, you can graph it.
 3. Substitute  into second equation and solve for "x" in order to find the x-intercept:
 into second equation and solve for "x" in order to find the x-intercept:
 
 4. Substitute  into the second equation and solve for "y" in order to find the y-intercept of the second line:
 into the second equation and solve for "y" in order to find the y-intercept of the second line:
 
Knowing that second line passes through the points  and
 and  , you can graph it.
, you can graph it.
 The solution of the system of equations is the point of intersection between the lines. Therefore, the solution of this system is:
 
 
        
             
        
        
        
y+2=-3x+12
  -2        -2
y=-3x+10
This is as far as it can be simplified.
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hope it helps
 
        
                    
             
        
        
        
Answer:
look at the picture i sent 
 
        
             
        
        
        
Hopefully I’m not too late, but here’s how I solved it. Basically, replace F with 68. Subtract 32 from both sides so your equation becomes 9/5C=36. Divide both sides by 9/5 so C is left but itself (C=36/1.8). The answer should come out to 20. If you want to check my answer, plug 20 into the equation. Multiply 20x9/5 which equals 36. Add 36 and 32 together to get 68. Hope this helps