Zapisz w jak najprostrzej postaci podane wyrazenia: a) x+[x-(z-x)] b) -(-a)+(-b+a) c) a-[b-(a+b)] d) x-{x-[x-(x+1)-x]+(1-x)} Jeżeli ktos nie wie to Matematyka 1 Gimnazjum strona 156 zadanie 11
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a) x+[x-(z-x)]=x+x-z+x=3x+z
b) -(-a)+(-b+a)=a-b+a=2a-b
c) a-[b-(a+b)]=a-(b-a-b)=a-b+a+b=2a
d) x-{x-[x-(x+1)-x]+(1-x)}=x-(x-(x-x-1)+1-x=x-(x-x+x+1)+1-x=x-x+x-x-x+1-x=-2x+1
a) x+[x-(z-x)]=x+x-z+x=3x+z
b) -(-a)+(-b+a)=a-b+a=2a-b
c) a-[b-(a+b)]=a-(b-a-b)=a-b+a+b=2a
d) x-{x-[x-(x+1)-x]+(1-x)}=x-(x-(x-x-1)+1-x=x-(x-x+x+1)+1-x=x-x+x-x-x+1-x=-2x+1