Oblicz:
a) 51,51:(-102)-1,27*(-400)+(-90,9):(-18)=
b) (-2 1/3)*(-4 2/7)+ 61/5:(-3 1/10)=
c) (4 1/6+5 1/4) * (-2 2/5)-(-1 3/8 - 2 3/4):(-11/24)=
Z góry dziękuję! ;)
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a) 51,51:(-102)-1,27*(-400)+(-90,9):(-18)= - 50,49 + 508 +5,05 = 462,56
b) (-2 1/3)*(-4 2/7)+ 61/5:(-3 1/10)= ( - 7/3 )*(- 30/7) + 61/5 : ( - 31/10) = 10 + 61/5 * ( - 10/31 ) =
= 10 + ( - 3 29/31 ) = 9 31/31 - 3 29/31 = 6 2/ 31
tylko te umiem zrobić