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lidia26
@lidia26
July 2022
2
9
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реши уравнение
(9х-20,7):47=13,14:14,6
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Эвничка
(9х-20.7):47=0.9
9х-20,7=0,9*47 +20,7
9х=63
х=7
1 votes
Thanks 4
lidia26
ой,а куда делось 20,7
Эвничка
подправила
ЮнаТян
(9х-20,7):47=13,14:14,6
(9х-20,7):47=0,9
9х-20,7=0,9*47
9х-20,7=42,3
9х=42,3+20,7
9х=63
х=63:9
х=7
2 votes
Thanks 6
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Answers & Comments
9х-20,7=0,9*47 +20,7
9х=63
х=7
(9х-20,7):47=0,9
9х-20,7=0,9*47
9х-20,7=42,3
9х=42,3+20,7
9х=63
х=63:9
х=7