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Катя888ВК
@Катя888ВК
July 2022
1
5
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Упростите выражение:
а) 5а+7б-2а-8б
б) 3(4х+2)-5
в)20б-(б-3)+(3б-10)
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КотикТанюшка
Verified answer
A)
5а
+ 7b -
2а
- 8b = a(5 - 2) + b(7 - 8).
Б)
3(4х + 2) - 5 = 12x +
6
-
5
= 12x + 1.
B)
20b - (b - 3) + (3b - 10)
=
20b
-
b
+ 3 +
3b
- 10 = 22b - 7.
156 votes
Thanks 345
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Answers & Comments
Verified answer
A)5а + 7b - 2а - 8b = a(5 - 2) + b(7 - 8).
Б)
3(4х + 2) - 5 = 12x + 6 - 5 = 12x + 1.
B)
20b - (b - 3) + (3b - 10) = 20b - b + 3 + 3b - 10 = 22b - 7.