September 2018 2 60 Report

W poniższych przykładach opuść poprawnie nawiasy i zredukuj wyrazy podobne .

a ) - [ ( x-2a )-( x+2a ) ]

b ) kl+l+k-4l+4kl-3k+3l+2k+9kl

c ) 3m+52g-3-( 2m-g ) - ( m-23g-3 )+70g

d ) 33e-[-3e +1-(4e+5)]-4

e) 4a+8b-3-(4a-7b-3)

f) (p+r)-(p-r) - [p-(p+r)]

g) 20-{-[-(3a+2)+(-4a-8)+2]-4a}+8


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