1..Wykonaj oddejmowanie
a) (6a+2a+1)-(-3a-2a+5)=
2..Usuń nawiasy i zredukuj wyrazy podobne:
a) 5x+(2x-7)-9x-(-3x+8)+20-8x=
b) -5x+(-2y+4x)-(7x-8y)-x+(2-6y)=
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1
a) ( 6a+2a+1) -(-3a-2a+5) = (8a + 1 ) - ( -5a +5) = 13a -4
Zad.2
a) 5x + (2x-7)-9x-(-3x+8)+20-8x = 5x + 2x -7-9x+3x-8+20-8x = -7x +5
b) -5x +(-2y +4x) -(7x-8y)-x+(2-6y)= -5x -2y+4x-7x+8y-x+2-6y = -9x +2