Wykonaj odejmowanie :
A) (0,5x²y² - ⅔ab-1) - (-⅓x²y²+1/12 ab -¼)=
b)(0,4ab - 0,5ab + 0,1cd ) - (-0,3ab + 2,5bc - cd )=
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a) =x2y2-3/4ab-3/4
b0 =0,2ab1,1cd-2,5bc
A) (0,5x²y²-2/3ab-1)-(-1/3x²y²+1/12ab-1/4)=
=0,5x²y²-2/3ab-1-1/3x²y²-1/12ab+1/4=
=3/6x²y²-8/12ab-1-2/6x²y²-1/12ab+1/4=
=1/6x²y²-9/12ab-3/4=1/6x²y²-3/4ab-3/4
B)
(0,4ab-0,5ab+0,1cd)-(-0,3ab+2,5bc-cd)=
=0,4ab-0,5ab+0,1cd-0,3ab-2,5bc+cd=
=-0,4ab-2,5bc+1,1cd