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zad. 10. str. 153
Oblicz wartość liczbową wyrażenia:

a) -y+8x-z-2z dla: x= -2, y= 6, z= -3
b) -8y-4z+x-y-2z+1 dla: x= -0,5 , y= -1, z=2
c) 9y-(7y+x)+()6x-7y dla: x= -2, y=3
d) (6a-8b-0,7)-(6,9+a-5b)+1,8 dla: a= 0,2 , b=0,1
e) 1/2abc-(4ab+2abc)+(-bc+5ab) dla: a= -2, b= 1/2. c= -4

zad.2.srt.155
Zamień iloczyn na sume:

a) 3(x-3) , 5(y+z), 4(3x-y), 3(4a-c), -2(7-42)
b) 1/2(4z+2). -1/3(6b-3), 0,2(x-5y), 3(1/3a+1)
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