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sofadmitrov
@sofadmitrov
September 2021
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Risha035
А)
(х + 15) - 8 = 17
х + 15 = 17+8
х + 15 = 25
х = 25 - 15
х = 10.
б)
(24 + х) - 21 = 10
24 + х = 10 + 21
24 + х = 31
х = 31 - 24
х = 7.
в)
(45 - у) + 18 = 58
45 - у = 58 - 18
45 - у = 40
у = 45 - 40
у = 5.
г)
(у - 35) + 12 = 32
у - 35 = 32 - 12
у - 35 = 20
у = 20 + 35
у = 55.
д)
56 - (х + 12) = 24
56 - х - 12 = 24
44 - х = 24
х = 44 - 24
х = 20.
е)
55 - (х - 15) = 30
55 - х + 15 = 30
70 - х = 30
х = 70 - 30
х = 40.
2 votes
Thanks 3
Лиша1998
А) x+15-8-17=0
x-10=0
x=10
(10+15)-8=17
25-8=17
б) 24+х-21-10
х-7=0
х=7
(24+7)-21=10
31-21=10
в) 45-у+18-58=0
-у+5=0
у=5
(45-5)+18=58
40+18=58
г) у-35+12-32=0
у-55=0
у=55
(55-35)+12=32
20+12=32
Д) 56-х-12-24=0
-х+20=0
х=20
56-(20+12)=24
56-32=24
е) 55-х+15-30=0
-х+40=0
х=40
55-(40-15)=30
55-25=30
0 votes
Thanks 0
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Answers & Comments
(х + 15) - 8 = 17
х + 15 = 17+8
х + 15 = 25
х = 25 - 15
х = 10.
б)
(24 + х) - 21 = 10
24 + х = 10 + 21
24 + х = 31
х = 31 - 24
х = 7.
в)
(45 - у) + 18 = 58
45 - у = 58 - 18
45 - у = 40
у = 45 - 40
у = 5.
г)
(у - 35) + 12 = 32
у - 35 = 32 - 12
у - 35 = 20
у = 20 + 35
у = 55.
д)
56 - (х + 12) = 24
56 - х - 12 = 24
44 - х = 24
х = 44 - 24
х = 20.
е)
55 - (х - 15) = 30
55 - х + 15 = 30
70 - х = 30
х = 70 - 30
х = 40.
x-10=0
x=10
(10+15)-8=17
25-8=17
б) 24+х-21-10
х-7=0
х=7
(24+7)-21=10
31-21=10
в) 45-у+18-58=0
-у+5=0
у=5
(45-5)+18=58
40+18=58
г) у-35+12-32=0
у-55=0
у=55
(55-35)+12=32
20+12=32
Д) 56-х-12-24=0
-х+20=0
х=20
56-(20+12)=24
56-32=24
е) 55-х+15-30=0
-х+40=0
х=40
55-(40-15)=30
55-25=30