A. 4(k+3)=4k+12 Dobrze
B. -3(x-y)=-3x+3y dobrze
C. (12k-4):(-4)=1-3k dobrze
D. (2x-1):1/2=x-1/2 źle powinno być:
(2x-1):1/2=(2x-1) razy 2=4x-2
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A. 4(k+3)=4k+12 Dobrze
B. -3(x-y)=-3x+3y dobrze
C. (12k-4):(-4)=1-3k dobrze
D. (2x-1):1/2=x-1/2 źle powinno być:
(2x-1):1/2=(2x-1) razy 2=4x-2