Zadanie 1.
Usuń nawias i wykonaj redukcję wyrazów podobnych.
a) (5x+2y)-(-3x+4y)-6x=
b) -(-3ab+8) + (2-4ab)-(7ab-12)=
a) (5x+2y)-(-3x+4y)-6x=5x+2y+3x-4y-6x=2x-2y
b) -(-3ab+8) + (2-4ab)-(7ab-12)=3ab-8+2-4ab-7ab+12=-8ab+6
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a) (5x+2y)-(-3x+4y)-6x=5x+2y+3x-4y-6x=2x-2y
b) -(-3ab+8) + (2-4ab)-(7ab-12)=3ab-8+2-4ab-7ab+12=-8ab+6