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AlisaAndNancy
@AlisaAndNancy
July 2022
1
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Реши уравнение:
45 : (32 - 27) * х - 12 = 60
( 270 * x - 430 ) : 8 + 25 = 3
34 : ( 18 - х ) * 4 - 56 = 12
( 560 : х + 30 ) : 5 + 25 = 45
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nafanya2014
Verified answer
1) 45 : (32 - 27) * х - 12 = 60
45 : (5) * х = 60+12
9*х=72
х=72:9
х=8
2)
( 270 * x - 430 ) : 8 + 25 = 3
( 270 * x - 430 ) : 8 = 3-25
(
270 * x - 430 ) : 8 = -22
( 270 * x - 430 ) = (-22)*8
270*х=430-176
270*х=254
х=254/270=127/135
Проверяйте условие, отличается решение от трех других. И это странно
3)
34 : ( 18 - х ) * 4 - 56 = 12
34 : ( 18 - х ) * 4 = 12+56
34 : ( 18 - х ) * 4 = 68
34 : ( 18 - х ) = 68 : 4
34 : ( 18 - х ) = 17
18-х=34:17
18-х=2
х=18-2
х=16
4)
( 560 : х + 30 ) : 5 + 25 = 45
( 560 : х + 30 ) : 5 = 45 - 25
( 560 : х + 30 ) : 5 = 20
( 560 : х + 30 ) = 20 · 5
560 : х + 30 = 100
560 : х = 100-30
560 : х = 70
х= 560 : 70
х= 8
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Answers & Comments
Verified answer
1) 45 : (32 - 27) * х - 12 = 6045 : (5) * х = 60+12
9*х=72
х=72:9
х=8
2)( 270 * x - 430 ) : 8 + 25 = 3
( 270 * x - 430 ) : 8 = 3-25
( 270 * x - 430 ) : 8 = -22
( 270 * x - 430 ) = (-22)*8
270*х=430-176
270*х=254
х=254/270=127/135
Проверяйте условие, отличается решение от трех других. И это странно
3) 34 : ( 18 - х ) * 4 - 56 = 12
34 : ( 18 - х ) * 4 = 12+56
34 : ( 18 - х ) * 4 = 68
34 : ( 18 - х ) = 68 : 4
34 : ( 18 - х ) = 17
18-х=34:17
18-х=2
х=18-2
х=16
4) ( 560 : х + 30 ) : 5 + 25 = 45
( 560 : х + 30 ) : 5 = 45 - 25
( 560 : х + 30 ) : 5 = 20
( 560 : х + 30 ) = 20 · 5
560 : х + 30 = 100
560 : х = 100-30
560 : х = 70
х= 560 : 70
х= 8