January 2019 1 13 Report
Jakimi liczbami należy zastąpić kropki?

a) 4x+6y= 2(...x + ...y)
b) 2( 6a+10)= 4(...a+...)
c) 5( 4n + 6k = 10( ... n +...k)
d) -3(2x+4)+ 2(...x- ...)
DAM NAJLEPSZE PLISSS

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