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200027
@200027
July 2022
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Реши уровнения 1) (Х - 380) х 50 = 2000 2) (Х + 8) : 70 = 4 3) 640 : (25-Х) = 40 4) 2700 : (Х - 12) = 90
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Verified answer
1) (х - 380) * 50 = 2000
х - 380 = 2000 : 50
х - 380 = 40
х = 380 + 40
х = 420
2) (х + 8) : 70 = 4
х + 8 = 4 * 70
х + 8 = 280
х = 280 - 8
х = 272
3) 640 : (25 - х) = 40
25 - х = 640 : 40
25 - х = 16
х = 25 - 16
х = 9
4) 2700 : (х - 12) = 90
х - 12 = 2700 : 90
х - 12 = 30
х = 30 + 12
х = 42
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Answers & Comments
Verified answer
1) (х - 380) * 50 = 2000х - 380 = 2000 : 50
х - 380 = 40
х = 380 + 40
х = 420
2) (х + 8) : 70 = 4
х + 8 = 4 * 70
х + 8 = 280
х = 280 - 8
х = 272
3) 640 : (25 - х) = 40
25 - х = 640 : 40
25 - х = 16
х = 25 - 16
х = 9
4) 2700 : (х - 12) = 90
х - 12 = 2700 : 90
х - 12 = 30
х = 30 + 12
х = 42