X(a+b)-y(a+b)
*factor out (a+b)*
=(a+b)(x-y)
        
             
        
        
        
First, distribute the 100 to the (x-1) portion:
500 = 100x - 100
then, add 100 to both sides of your equation to get “x” alone on the right side:
500 + 100 = 100x - 100 + 100
600 = 100x
next, divide 100x by 100 and 600 by 100 to isolate a singular “x”:
600/100 = 100x/100
6 = x
therefore, x=6 is your solution
        
             
        
        
        
Ok so this is an output/input question u will do 12.5 + 3.8(7.9) =x so in order to get x u will do 7.9 × 3.8 which gives u 29.64 then u will add that to 12.5 which gives u x = 46.14
        
                    
             
        
        
        
Answer:
yeah it sucks I'm sorry that happened to you. it'll get better. never be friends with that toxic person again.