Out of 310 people over the age 55, 64 dreamed in black and white. Out of 303 people under the age of 25, 13 dreamed in black and white

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Out of 310 people over the age 55, 64 dreamed in black and white.
Out of 303 people under the age of 25, 13 dreamed in black and white.
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bonexptip 6 months 2021-08-17T07:00:18+00:00 1 Answers 1 views 0

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    2021-08-17T07:01:29+00:00

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )