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SvitiBal70
@SvitiBal70
July 2022
2
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Решите уравнения:
1) 20:(x:9)=4
2) 7*x-14=28
3) (63:y)*9=81
4) 49:y+6=13
5)50-9-a=23
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PrЯnicheg
1) 20:(x:9)=4
x:9=20:4
х:9=5
х=5*9
х=45
2) 7*x-14=28
7х=28+14
7х=42
х=42:7
х=6
3) (63:y)*9=81
63:у=81:9
63:у=9
у=63:9
у=7
4) 49:y+6=13
49:у=13-6
49:у=7
у=49:7
у=7
5)50-9-a=23
50-а=23+9
50-а=32
а=50-32
а=18
8 votes
Thanks 13
SvitiBal70
Спасибо
ЧукГек
1)20÷х/9=4
х/9=20/4
х/9=5
х=5×9
х=45
2)7х-14=28
7х=28+14
7х=42
х=42/7
х=6
3)63/у×9=81
63/у=81/9
63/у=9
у=63/9
у=7
4)49/у+6=13
49/у=13-6
49/у=7
у=49/7
у=7
5)50-9-а=23
41-а=23
-а=23-41
-а=-18
а=18
3 votes
Thanks 3
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Answers & Comments
x:9=20:4
х:9=5
х=5*9
х=45
2) 7*x-14=28
7х=28+14
7х=42
х=42:7
х=6
3) (63:y)*9=81
63:у=81:9
63:у=9
у=63:9
у=7
4) 49:y+6=13
49:у=13-6
49:у=7
у=49:7
у=7
5)50-9-a=23
50-а=23+9
50-а=32
а=50-32
а=18
х/9=20/4
х/9=5
х=5×9
х=45
2)7х-14=28
7х=28+14
7х=42
х=42/7
х=6
3)63/у×9=81
63/у=81/9
63/у=9
у=63/9
у=7
4)49/у+6=13
49/у=13-6
49/у=7
у=49/7
у=7
5)50-9-а=23
41-а=23
-а=23-41
-а=-18
а=18