Doprowadź wyryrażenie do naprostszej postaci:
(5x-3y-1)-(5y+2x-4)=
5x-3y-1-5y-2x+4=-3x-8y+3
5x-3y-1-5y+2x-4=5x+2x-3y-5y-1-4=7x-(-2y)-(-4)=7x+2y+4
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(5x-3y-1)-(5y+2x-4)=
5x-3y-1-5y-2x+4=-3x-8y+3
5x-3y-1-5y+2x-4=5x+2x-3y-5y-1-4=7x-(-2y)-(-4)=7x+2y+4