Distribute on both sides
2x - 8 = 6x + 12
Move x to one side
-20 = 4x
Divide by 4
-5 = x
        
             
        
        
        
46 cm. 
do 102/17 and get 6. now take 6+6+17+17= 46 cm. that’s ur perimeter
        
             
        
        
        
        
Are you asking what is 248-200? If so that would be 48. 200-248=248
        
                    
             
        
        
        
B=bellt price
j=jacket price
b+j=82.78
belt is 0.86 less than jacket
b=j-0.86
add 0.86 to both sides
b+0.86=j
sub
b+b+0.86=82.78
2b+0.86=82.78
minus 0.86 from both sides
2b=81.92
divid both sides by 2
b=40.96
belt=$40.96