I Hate Homework

Had to do some math exercises for school
6x²+5x+1=6x²+5x-4
6x²-6x²+5x-5x+5=0
0x²-0x+5=0
OR
0=-6x²+6x²-5x+5x-5
0=0x²-0x-5
So →
5=0
OR
0=-5
Wht......?
Why math WHYYYYYYY!!?