Podane wyrażenia zapisz w jak najprostrzej postaci.
a) a-[a-(1-a)]
b) -x-[-(1-x)-(x-1)]
c) x-[y-(x-y)-x-(y-x)]
d) 1-a-[1-(a-1)-2a-(1-3a)]-a-1
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a) a-[a-(1-a)] = a-[a-1+a] = a-2a+1 = 1-a
b) -x-[-(1-x)-(x-1)] = -x-[-1+x-x+1] = -x-0 = -x
c) x-[y-(x-y)-x-(y-x)] = x-[y-x+y-x-y+x]= x-[y-x]= x-y+x = 2x-y
d) 1-a-[1-(a-1)-2a-(1-3a)]-a-1 = 1-a-[1-a+1-2a-1+3a]-a-1 = 1-a-1-a-1 = -1-2a
Mam nadzieję, że pomogłem :)