August 2018 3 12 Report
Wykonaj działania: a) a+(a-b)
b) 2x-(x+4)
c) 7-(-x+6)
d) -(x+4)+(x-5)
e) 1-(t+p)-(t-2)
f) -(-y+2)+(-2Y-4)
Czy tak jest dobrze :
a) a+a-b=2a-b
b) 2x-x-4=x-4
c) 7+x-6=x+1
d) -x-4+x-5=-9
e) 1-t-p-t+2=-2t-p+3
f) y-2-2y-4=y-6
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