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shilovskiyvovo
@shilovskiyvovo
August 2022
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решите уравнения а)3,6х=7,2 б) -4,3у=14,62 в)-0,01у=-1 г)5(0,2-х)=25 д)-9/14x+2=4 4/7
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Санечка69
Verified answer
а) 3,6х = 7,2, б) -4,3у = 14,62, в) -0,01у = -1,
х = 7,2 : 3,6, у = 14,62 : (-4,3), у = -1 : (-0,01),
х = 2; у = -3,4; у = 100;
г) 5(0,2 - х) = 25, д) -9/14x + 2 = 4 целых 4/7,
0,2 - х = 25 : 5, -9/14х = 4 целых 4/7 - 2,
0,2 - х = 5, -9/14х = 2 целых 4/7,
х = 0,2 - 5, х = 2 целых 4/7 : (-9/14),
х = -4,8; х = -18/7 · 14/9,
х = -4/1 = -4.
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Answers & Comments
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а) 3,6х = 7,2, б) -4,3у = 14,62, в) -0,01у = -1,х = 7,2 : 3,6, у = 14,62 : (-4,3), у = -1 : (-0,01),
х = 2; у = -3,4; у = 100;
г) 5(0,2 - х) = 25, д) -9/14x + 2 = 4 целых 4/7,
0,2 - х = 25 : 5, -9/14х = 4 целых 4/7 - 2,
0,2 - х = 5, -9/14х = 2 целых 4/7,
х = 0,2 - 5, х = 2 целых 4/7 : (-9/14),
х = -4,8; х = -18/7 · 14/9,
х = -4/1 = -4.