October 2018 2 39 Report

zad 1. -2a+8a-5a= 4b-3(2-b)= -15+20d+12-18d= 4(-2+y)-(4y-5)+4= a(2+x)= b(b-a)= a(a+a2)= zad2 2x+6=12 3y-4=17 4-2x=10 x+6=2x+3 2x+4=4-3x 3x+11=6x-1 2(x+1)=5 zad3adam narysował plan swojego pokoju w skali 1:100. był to prostokąt o wymiarach 4,5cmx6cm. Oblicz pole pokoju. zad 4 Strus biega 50km/h. Oblicz w jakim czasie pokona 15 km.


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