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миикки
@миикки
July 2022
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1 выполните вычитание
а)-3,6-4,7
б)6,3-(-8,1)
в) 4 1/3-5 2/7
г)-6 5/24-(-5 13/30).
2 решите уравнение
а) х-(-2,7)=3,8
б) 16,37+у=-30
в) 4 1/9 -х=-3 1/6
3 решите уравнение |х-3|=6
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Answers & Comments
katya20009
А) -3,6 - 4,7 = -8,3
б) 6,3 - ( -8,1) = 6,3 + 8,1 = 14,4
в) 4 и 1/3 - 5 и 2/7 = 4 и 7/21 - 5 и 6/21 = -20/21
г) -6 и 5/24 - (-5 и 13/30) = -6 и 5/24 + 5 и 13/30 = -6 и 25/120 + 5 и 52/120 = -(6 и 25/120 - 5 и 52/120) = -(5 и 145/120 - 5 и 52/120) = -93/120 = -31/40
14 votes
Thanks 24
katya20009
/х-3/=6
х=6+3
х=9
------------------
/9-3/=6
6=6
katya20009
1) Х + 2.7 = 3.8
X = 3.8 - 2.7
X = 1.1
2) Y = 16.37 + 30
Y = 46.37
3) X = 4 1/9 + 3 1/6
X = 4 2/18 + 3 3/18 = 7 5/18
миикки
да ты мастер
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Answers & Comments
б) 6,3 - ( -8,1) = 6,3 + 8,1 = 14,4
в) 4 и 1/3 - 5 и 2/7 = 4 и 7/21 - 5 и 6/21 = -20/21
г) -6 и 5/24 - (-5 и 13/30) = -6 и 5/24 + 5 и 13/30 = -6 и 25/120 + 5 и 52/120 = -(6 и 25/120 - 5 и 52/120) = -(5 и 145/120 - 5 и 52/120) = -93/120 = -31/40
х=6+3
х=9
------------------
/9-3/=6
6=6
X = 3.8 - 2.7
X = 1.1
2) Y = 16.37 + 30
Y = 46.37
3) X = 4 1/9 + 3 1/6
X = 4 2/18 + 3 3/18 = 7 5/18