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olga83g
@olga83g
July 2022
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Вычислите:
1) 1/7*(-7/9)+(-1/2)2 степень
2) -3/4*12/7-(-1/7)2 степень
3)-3*(-2/3):5/12:(-3/2)2 степень
4)0,5:(-1/3)2 степень*(-2 2/3)*5/6
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Answers & Comments
aleks41
1) (1/7)·(-7/9)+(-1/2)^2=(-1/9)+(1/4)=5/36.
2) (-3/4)·(12/7)-(1/7)^2=(-9/7)-(1/49)=-64/49.
3) (-3)·(-2/3):(5/9):(-3/2)^2=2·(12/5)·(4/9)=96/40=2,4.
4) (1/2):(-1/3^2)·(-8/3)·(5/6)=(1/2)·(-9/1)·(-8/3)·(5/6)=5/
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Answers & Comments
2) (-3/4)·(12/7)-(1/7)^2=(-9/7)-(1/49)=-64/49.
3) (-3)·(-2/3):(5/9):(-3/2)^2=2·(12/5)·(4/9)=96/40=2,4.
4) (1/2):(-1/3^2)·(-8/3)·(5/6)=(1/2)·(-9/1)·(-8/3)·(5/6)=5/