Dariosmok0000viz
Rozwiązane

4 Usuń nawiasy i zredukuj wyrazy podobne. a) 5x + (2x + 4x) - (7x - 8y) - x + (2 - 6y). b) -5x + (-2y + 4x) - (7x - 8y) - x + (2 - 6y). c) -9z - (4 - 3z) - 8y - (-7z + 8y) + (-2 - 7). PROSZE NA TERAZ DAJE NAJ ​

Odpowiedź :

Pitereq16viz

a) 5x + (2x + 4x) - (7x - 8y) - x + (2 - 6y)=
5x+6x-7x+8y-x+2-6y=3x+2y+2

b) -5x + (-2y + 4x) - (7x - 8y) - x + (2 - 6y)=
-5x-2y+4x-7x+8y-x+2-6y=-9x+2

c) -9z - (4 - 3z) - 8y - (-7z + 8y) + (-2 - 7)=

-9z-4+3z-8y+7z-8y-2-7=z-16y-13

Magdaviz

Odpowiedź:

[tex]a)\ \ 5x+(2x+4x)-(7x-8y)-x+(2-6y)=5x+6x-7x+8y-x+2-6y=\\\\=3x+2y+2\\\\\\b)\ \ -5x+(-2y+4x)-(7x-8y)-x+(2-6y)=-5x-2y+4x-7x+8y-x+2-6y=\\\\=-9x+2\\\\\\c)\ \ -9z-(4-3z)-8y-(-7z+8y)+(-2-7)=-9z-4+3z-8y+7z-8y+(-9)=\\\\=z-4-16y-9=-16y+z-13[/tex]

Viz Inne Pytanie