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EddieSpaghetti
@EddieSpaghetti
July 2021
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ПОМОГИТЕ С МАТЕМАТИКОЙ!!!
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narminalieva11
15 17 х 2 17
1) г) 15/16 х (-34/45)= -------- х (- ---------) = - ------
8 х 2 3 х 15 24
д) -3 3/5 х 2 7\9= -18\5 х 25/9 = -10
е)-5 5/6 х (-3/7)= -35/6 х (-3/7)= 5/2
2) г) 5/16 : (-3/8)=5/16 х (-8/3)= -5/6
д) -6 2/3 : 8/9= -20/3 : 8/9= -20/3 х 9/8= -15\2= -7 1/2
е) -36/47 : (-9)= -36/47 х (-1/9)= 4/47
3) а) (-3/5 х 0,8 - 13/25) х 0,7= -0,7
1. -3/5 х 0,8= -0,6 х 0,8 = -0,48
2. -0,48 - 13/25= -0,48 - 0,52= -1
3. -1 х 0,7= -0,7
б) (-2,6)² - (-3,2) х (-3/8) + (-6,56)= -1
1) (-2,6)²= -2,6 х (-2,6)= 6,76
2) -3,2 х (-3/8)=-32\10 х (-3/8)= 12\10= 1,2
3) 6,76 - 1,2= 5,56
4) 5,56 + (-6,56)= -1
4) б) -8/25 : (-3 1/5) : (-1 1/4)=-2/25
1) -8\25 : (-3 1/5)= -8\25 : (-16/5)= -8\25 х (-5/16)= 1\10
2) 1/10 : (-1 1/4) = 1/10 : (-5/4)= 1/10 х (-4/5)= -2\25
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Answers & Comments
1) г) 15/16 х (-34/45)= -------- х (- ---------) = - ------
8 х 2 3 х 15 24
д) -3 3/5 х 2 7\9= -18\5 х 25/9 = -10
е)-5 5/6 х (-3/7)= -35/6 х (-3/7)= 5/2
2) г) 5/16 : (-3/8)=5/16 х (-8/3)= -5/6
д) -6 2/3 : 8/9= -20/3 : 8/9= -20/3 х 9/8= -15\2= -7 1/2
е) -36/47 : (-9)= -36/47 х (-1/9)= 4/47
3) а) (-3/5 х 0,8 - 13/25) х 0,7= -0,7
1. -3/5 х 0,8= -0,6 х 0,8 = -0,48
2. -0,48 - 13/25= -0,48 - 0,52= -1
3. -1 х 0,7= -0,7
б) (-2,6)² - (-3,2) х (-3/8) + (-6,56)= -1
1) (-2,6)²= -2,6 х (-2,6)= 6,76
2) -3,2 х (-3/8)=-32\10 х (-3/8)= 12\10= 1,2
3) 6,76 - 1,2= 5,56
4) 5,56 + (-6,56)= -1
4) б) -8/25 : (-3 1/5) : (-1 1/4)=-2/25
1) -8\25 : (-3 1/5)= -8\25 : (-16/5)= -8\25 х (-5/16)= 1\10
2) 1/10 : (-1 1/4) = 1/10 : (-5/4)= 1/10 х (-4/5)= -2\25