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карина123456789123
@карина123456789123
July 2022
1
6
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Решите уравнения
21z+50=85,
19-2z=93,
97-3z=72,
21 =69+6c
97=4z+37,
87=35+13y,
85=89+2z,
14=7x-35
Дам двадцать балов. Пожалуста распишите .
Вот образец
89=5x=49
5x=89-49
5x=40
x=40/5
x=8
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Answers & Comments
Waguqady200
Verified answer
1) 21z+50=85
21z=85-50
21z=35
z=35/21=5/3
2) 19-2z=93
-2z=93+19
-2z=112
z=-56
3) 97-3z=72
-3z=72-97
-3z=-25
z=-25/-3
4) 21=69+6c
21-69=6c
48=6c
c=8
5) 97=4z+37
4z=37-97
4z=-60
z=-15
6) 87=35+13y
-13y=35-87
-13y=-52
y=4
7) 85=89+2z
-2z=89-85
-2z=4
z=-2
8) 14=7x-35
-7x=-35-14
-7x=-49
x=7
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Answers & Comments
Verified answer
1) 21z+50=8521z=85-50
21z=35
z=35/21=5/3
2) 19-2z=93
-2z=93+19
-2z=112
z=-56
3) 97-3z=72
-3z=72-97
-3z=-25
z=-25/-3
4) 21=69+6c
21-69=6c
48=6c
c=8
5) 97=4z+37
4z=37-97
4z=-60
z=-15
6) 87=35+13y
-13y=35-87
-13y=-52
y=4
7) 85=89+2z
-2z=89-85
-2z=4
z=-2
8) 14=7x-35
-7x=-35-14
-7x=-49
x=7