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kamilskylinep0a6rx
@kamilskylinep0a6rx
August 2022
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решите уравнение (0,1x + 90)/(300 + x) = 0,14 - найдите х
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qweasdzxc123321123
(0.1х + 90)/(300+х)=0.14х= -300
х+900 1
-------- * -------- = 0,14
10 300+х
х+900=1,4(300+х)
х+900=420+1,4х
-0,4х= -480
х=1200, х≠-300
х=-300
2 votes
Thanks 1
kamilskylinep0a6rx
Спасибо)))
qweasdzxc123321123
ой, х=1200
kamilskylinep0a6rx
(0.02х +30)/(200+х)=0.10х --реши аналогичный , у меня не получается
kamilskylinep0a6rx
плеееес)))
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Answers & Comments
х+900 1
-------- * -------- = 0,14
10 300+х
х+900=1,4(300+х)
х+900=420+1,4х
-0,4х= -480
х=1200, х≠-300
х=-300