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Thandey
26.12.2021 03:11

1.решите: 3 (5-х)=11+2х 2. найдите значение выражения: 3а+5в-4а-2в при а=5,3; в=1/3 3.представьте выражение в виде степени: (у3)4×у2 у7 решите что сможете

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Ответ:
Tosya111
27.08.2020 07:29
1)3(5x - x) = 11 + 2x \\ 15x - 3x = 11 + 2x \\ 12x = 11 + 2x \\ 12 x - 2x = 11 \\ 10x = 11 \\ x = \frac{11}{10} \\ x = 1.1
2)3а+5в-4а-2в=3в-а
при а=5,3; в=1/3; то
3×(1/3)-5,3= 1-5,3=-4,3
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Ответ:
Dodgesantafe
27.08.2020 07:29
Не уверенна, что 3 правильно решила
1.решите: 3 (5-х)=11+2х 2. найдите значение выражения: 3а+5в-4а-2в при а=5,3; в=1/3 3.представьте вы
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