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arinuhkas
@arinuhkas
July 2022
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30 баллов , помогите
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Віктор385
Verified answer
1) 4(2-3х) = -7х+10
раскроем скобки
8 - 12х = -7х + 10
переносим по сторонам
-12х + 7х = 10 - 8
-5х = 2
х = -5:2
х = -2,5
2)
-4 (5-4х) = х+1
-20 +16х = х+1
16х - х = 20+1
15х = 21
х = 21:15
х = 1,4
3)
-4 (-7+6х) = -9х-5
28 - 24х = -9х - 5
-24х +9х = -5 +28
-15х = 23
х = 23 : (-15)
х = - 1,53
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Answers & Comments
Verified answer
1) 4(2-3х) = -7х+10раскроем скобки
8 - 12х = -7х + 10
переносим по сторонам
-12х + 7х = 10 - 8
-5х = 2
х = -5:2
х = -2,5
2)
-4 (5-4х) = х+1
-20 +16х = х+1
16х - х = 20+1
15х = 21
х = 21:15
х = 1,4
3)
-4 (-7+6х) = -9х-5
28 - 24х = -9х - 5
-24х +9х = -5 +28
-15х = 23
х = 23 : (-15)
х = - 1,53