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aniavetisyan
@aniavetisyan
July 2022
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(7x+8y)-(5x-2y) при х=-3/4,у=0,025
найти значение выражение ,предварительно упростив его:
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prettypushkova
Verified answer
(7х + 8у) - (5х - 2у) = 7х + 8у - 5х + 2у = (7х - 5х) + (8у + 2у) = 2х + 10у
при х = - 3/4 = - 0,75 у = 0,025
2 * (- 0,75) + 10 * 0,025 = - 1,5 + 0,25 = - 1,25
40 votes
Thanks 74
aniavetisyan
это правильно??
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Answers & Comments
Verified answer
(7х + 8у) - (5х - 2у) = 7х + 8у - 5х + 2у = (7х - 5х) + (8у + 2у) = 2х + 10упри х = - 3/4 = - 0,75 у = 0,025
2 * (- 0,75) + 10 * 0,025 = - 1,5 + 0,25 = - 1,25