Odpowiedź :
1][-3⅘:0,5]-[-3⅘×0,5]=[-3,8:0,5]-[-3,8×0,5]=-7,6+1,9= -5,7 zad.2]-½×⅘-[-0,8]×⅚=-⁴/₁₀+⅘×⅚=-⁴/₁₀+⅔= -¹²/₃₀+²⁰/₃₀=⁸/₃₀=⁴/₁₅ zad.3]1-[1-⅔][⅔-1]=1-⅓×[-⅓]=1+¹/₉=1¹/₉ zad.4]2,25×[-1,6]+[-19,5]:[-2½]= -3,6+7,8=4,2-pozdrawiam
(-3 4/5 : 5/10)- (- 3 4/5 * 5/10)= -19/5 : 5/10 - (-3 4/5 * 5/10)=
=-19/5 * 10/5 - (-3 4/5 * 5/10)= - 38/5 - (- 19/5 * 5/10)=
=- 38/5- (-95/50)= 38/5 + 95/50 Sprowadzamy do wspólnego mianownika 380/50 + 95/50= 475/50
( - 1/2 * 4/5)- (- 8/10 *5/6)= - 4/10 - (-40/60)= - 4/10+ 40/60=
= sprowadzamy do wspólnego mianownika -24/60 + 40/60=
= 16/60
1-(1- 2/3)*(2/3-1)= 1- (1/3) * ( -1/3)= 1- (-1/9)=1+ 1/9= 1 cała i jedna dziewiata
[(2,25 * (-1,6)] + (19.5 : (-2 1/2)= ((2.25* (-1,6)) + (19.5 : (-2,5)=
= - 3.6 + (- 7.8)= 3.6 - 7.8= - 4.2
Pozdrawiam:*
=-19/5 * 10/5 - (-3 4/5 * 5/10)= - 38/5 - (- 19/5 * 5/10)=
=- 38/5- (-95/50)= 38/5 + 95/50 Sprowadzamy do wspólnego mianownika 380/50 + 95/50= 475/50
( - 1/2 * 4/5)- (- 8/10 *5/6)= - 4/10 - (-40/60)= - 4/10+ 40/60=
= sprowadzamy do wspólnego mianownika -24/60 + 40/60=
= 16/60
1-(1- 2/3)*(2/3-1)= 1- (1/3) * ( -1/3)= 1- (-1/9)=1+ 1/9= 1 cała i jedna dziewiata
[(2,25 * (-1,6)] + (19.5 : (-2 1/2)= ((2.25* (-1,6)) + (19.5 : (-2,5)=
= - 3.6 + (- 7.8)= 3.6 - 7.8= - 4.2
Pozdrawiam:*
1][-3⅘:0,5]-[-3⅘×0,5]=[-3,8:0,5]-[-3,8×0,5]=-7,6+1,9= -5,7 zad.2]-½×⅘-[-0,8]×⅚=-⁴/₁₀+⅘×⅚=-⁴/₁₀+⅔= -¹²/₃₀+²⁰/₃₀=⁸/₃₀=⁴/₁₅ zad.3]1-[1-⅔][⅔-1]=1-⅓×[-⅓]=1+¹/₉=1¹/₉ zad.4]2,25×[-1,6]+[-19,5]:[-2½]= -3,6+7,8=4,2-