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b= (-0,2)
0,1 + 3*(-0,2) -4-2*0,1 - 2*(-0,2) - 0,1=
= 0,1 - 0,6 -4 + 0,2 + 0,4 - 0,1=
= -4
2. 5x-(jedna czwarta -2y)+(-4x+3y)-2
5x +0,25 + 2y -4x - 3y -2=
x - y - 1,75
-2a+b-4=-2*0,1-0,2-4=-0,2-0,2-4=-4,4
5x-(1/4-2y)+(-4x+3y)-2=5x-1/4+2y-4x+3y-2=x+5y-2 1/4