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Artoym2003560925
@Artoym2003560925
July 2022
2
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Задания
1.Решить уравнение: 35-5(x-7)=80
2.Упростить: -8-2(1-в)-2в+1
Срочно!!! Буду очень благодарен)
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Wolf2446
Ответ в прикрепленном файле
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kolobok1431
1.
35-5(x-7)=80
35 - 5х + 35 = 80
- 5х + 70 = 80
- 5х = 80 - 70
х = 10 : (- 5)
х = - 2
Проверка
35 - 5(-2-7) = 80
35 - 5
· (-9) = 80
35 + 45 = 80
80 = 80
Ответ: х = - 2
2.Упростить:
-8-2(1-в)-2в+1 = -8-2+2в-2в+1= - 9
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Answers & Comments
35-5(x-7)=80
35 - 5х + 35 = 80
- 5х + 70 = 80
- 5х = 80 - 70
х = 10 : (- 5)
х = - 2
Проверка
35 - 5(-2-7) = 80
35 - 5· (-9) = 80
35 + 45 = 80
80 = 80
Ответ: х = - 2
2.Упростить:
-8-2(1-в)-2в+1 = -8-2+2в-2в+1= - 9