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Mikaliana
@Mikaliana
August 2022
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Помогите пожалуйста! Решить уравнение столбиком,
Sos Даю 15балов
8х+3(7-2х)=4х+3
3/4у-2/3=7/12у
3/5(5u-2/3) < 4+7,6
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irinaorlova2
8Х+3(7-2Х)=4Х+3
8х+21-6х=4х+3
8х-6х-4х=3-21
-2х=-18
х=-18:(-2)
х=9
проверка:
8*9+3(7-2*9)=4*9+3
72+3*(-11)=36+3
39=39
3\4у-2\3=7\12у
9\12у-7\12у=2\3
2\12у=2\3
у=2\3*6\1
у=4
проверка6
3*4\4-2\3=7*4\12
3-2\3=7\3
2 1\3=2 1\3
3\5(5и-2\3)∠4+7,6
3и-0,4∠11,6
3и∠11,6+0,4
3и∠12
и∠12:3
и∠4
1 votes
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Mikaliana
Спасибо
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Answers & Comments
8х+21-6х=4х+3
8х-6х-4х=3-21
-2х=-18
х=-18:(-2)
х=9
проверка:
8*9+3(7-2*9)=4*9+3
72+3*(-11)=36+3
39=39
3\4у-2\3=7\12у
9\12у-7\12у=2\3
2\12у=2\3
у=2\3*6\1
у=4
проверка6
3*4\4-2\3=7*4\12
3-2\3=7\3
2 1\3=2 1\3
3\5(5и-2\3)∠4+7,6
3и-0,4∠11,6
3и∠11,6+0,4
3и∠12
и∠12:3
и∠4