5(x+1)=5(x+5)-15
5(x)+5(1)=5(x)+5(5)-15
5x+5=5x+25-15
5x+5=5x+10
-5x -5x
5=10
-5 -5
0=5
There is no solution to this equation because the left side does not equal the right side. The answer is "no solution" or "∅" which is the symbol for no solution in math