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Takblet666
@Takblet666
August 2022
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Помогите решить, пожалуйста!
4*(3 1/8 х + 2 1/4) +1 1/2, при х=2/7, и при х = 1 2/10
Заранее спасибо.
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jekadva
4*(3 1/8 х + 2 1/4) +1 1/2 = 4(25/8x + 9/4) + 3/2 = 25/2x + 9 + 3/2 = 25/2x + 18/2 + 3/2 = 25/2x +21/2
при х = 2/7
25/2 * 2/7 + 21/2 = 25/7 + 21/2 = 50/14 + 147/14 =197/14 = 14 1/14
при х=1 2/10
25/2 * 1 2/10 +21/2 = 25/2 * 12/10 + 21/2 = 30/2 + 21/2 = 51/2 = 25 1/2
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Answers & Comments
при х = 2/7
25/2 * 2/7 + 21/2 = 25/7 + 21/2 = 50/14 + 147/14 =197/14 = 14 1/14
при х=1 2/10
25/2 * 1 2/10 +21/2 = 25/2 * 12/10 + 21/2 = 30/2 + 21/2 = 51/2 = 25 1/2