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natasha842650
@natasha842650
August 2022
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Поогите решить уравнение
1) 3+7х+18=178
2)7х+6х-13=13
3)21х×4х-17=17
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finghjky
1)3+7х+18=178
7х=178-3-18
7х=157
х=157:7
х=22,4(157/7=22 3/7)
2)7х+6х-13=13
13х=13+13
13×=26
х=26÷13
х=2
3)21х·4х-17=17
84х=17+17
84х=34
х=34÷84
х=0,4 (34/84=17/42)
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Answers & Comments
7х=178-3-18
7х=157
х=157:7
х=22,4(157/7=22 3/7)
2)7х+6х-13=13
13х=13+13
13×=26
х=26÷13
х=2
3)21х·4х-17=17
84х=17+17
84х=34
х=34÷84
х=0,4 (34/84=17/42)