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Nastya371135
@Nastya371135
November 2021
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ПОМОГИТЕ СРОЧНО! надо раскрыть скобки и решить
1)(-а-5)-( 3а+7)
2) -(5x+8,36-18)+8,36
3)(5-2y) + (-9+y)-(12-2y)
4)(5p-3целые8одиннадцатых)-(-2p- 5целых3 одиннадцатых)
5)-(3.7b+8.1) + (2.4b-7.14)
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Inf777
Verified answer
1) (- а - 5) - (3а + 7) = - а - 5 -3а - 7 =
- 4а - 12
2) - (5х + 8,36 - 18) + 8,36 = - 5х - 8,36 + 18 + 8,36 =
- 5х + 18
3) (5 - 2у) + (- 9 + у) - (12 - 2у) = 5 - 2у - 9 + у - 12 + 2у =
у - 16
4) (5р - 3 8/11) - (- 2p - 5 3/11) = 5p - 3 8/11 + 2p + 5 3/11 =
7p + 1 6/11
5) - (3,7b + 8,1) + (2,4b - 7,14) = - 3,7b - 8,1 + 2,4b - 7,14 =
- 1,3b - 15,24
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Answers & Comments
Verified answer
1) (- а - 5) - (3а + 7) = - а - 5 -3а - 7 = - 4а - 122) - (5х + 8,36 - 18) + 8,36 = - 5х - 8,36 + 18 + 8,36 = - 5х + 18
3) (5 - 2у) + (- 9 + у) - (12 - 2у) = 5 - 2у - 9 + у - 12 + 2у = у - 16
4) (5р - 3 8/11) - (- 2p - 5 3/11) = 5p - 3 8/11 + 2p + 5 3/11 = 7p + 1 6/11
5) - (3,7b + 8,1) + (2,4b - 7,14) = - 3,7b - 8,1 + 2,4b - 7,14 = - 1,3b - 15,24