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mycopovop
@mycopovop
July 2022
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zelen04
1) 9(2х-3у)-8(у-х)= 18х-27у-8у+8х=26х-35у
2)7(4-3х)-(8,5-х)=4-3(х-8)
28-21х-8,5+х = 4-3х+24
21х+х+3х = 4+24-28-8,5
25х = -8,5
х= -8,5 : 25
х= -0,34
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Answers & Comments
2)7(4-3х)-(8,5-х)=4-3(х-8)
28-21х-8,5+х = 4-3х+24
21х+х+3х = 4+24-28-8,5
25х = -8,5
х= -8,5 : 25
х= -0,34