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Ясныйпень
@Ясныйпень
July 2022
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Упростите выражение:
а) 5а + 7b – 2a – 8b;
б) 3(4х + 2) – 5;
в) 20b – (b – 3) + (3b – 10).
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Kristina2486
А) (5а-2а)+(7b-8b)= 3a-1b
б)3(4х+2)-5=12х+6-5=12х-1
в)20b-(b-3)+(3b-10)= 20b-b+3+3b-10= 22b-7
2 votes
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Answers & Comments
б)3(4х+2)-5=12х+6-5=12х-1
в)20b-(b-3)+(3b-10)= 20b-b+3+3b-10= 22b-7