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Dimsha
@Dimsha
June 2022
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Решите уравнение 9/15(x-3/7)=23/28
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ludmilaborisova
9/15(Х -3/7)=23/28
9/15Х -27/105=23/28
9/15Х=23/28 +27/105
9/15Х=(345+108)/105
Х=15(345+108)/105*9=453/7*9=453/63=7 12/63=7 4/21
1 votes
Thanks 1
Dimsha
Извините, я немного ошиблась после 9/15 должен стоять +
lyudmiladisha
9/15x-27/105=23/28
9/15x=23/28+27/105
9/15x=(345+108)/420
9/15x=453/420
x=(453*15)/(420*9)
x=151/84
x=1целая 67/84
0 votes
Thanks 0
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Answers & Comments
9/15Х -27/105=23/28
9/15Х=23/28 +27/105
9/15Х=(345+108)/105
Х=15(345+108)/105*9=453/7*9=453/63=7 12/63=7 4/21
9/15x=23/28+27/105
9/15x=(345+108)/420
9/15x=453/420
x=(453*15)/(420*9)
x=151/84
x=1целая 67/84