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ekaterinanikitenko
@ekaterinanikitenko
August 2022
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(4,5-1,2x)/9=(2,5x+10,2)/3
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кляча
Verified answer
(4,5 - 1,2х) / 9 = (2,5х + 10,2) / 3
По правилу пропорции:
(2,5х + 10,2)* 9 = (4,5 - 1,2х)* 3
22,5х + 91,8 = 13,5 - 3,6х
22,5х + 3,6х = 13,5 - 91,8
26,1х = - 78,3
х = - 3
3 votes
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Answers & Comments
Verified answer
(4,5 - 1,2х) / 9 = (2,5х + 10,2) / 3По правилу пропорции:
(2,5х + 10,2)* 9 = (4,5 - 1,2х)* 3
22,5х + 91,8 = 13,5 - 3,6х
22,5х + 3,6х = 13,5 - 91,8
26,1х = - 78,3
х = - 3