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saidsofiya567
@saidsofiya567
July 2022
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Решите уравнение : 1) 2,5*(4,3-2,1)+10х=17,3 2) 100х-8,7*(21,3+8,7)=0 3) (15,1+284,9)*0,1-1000 х=10,3 4) (237,9+42,1)*0,25-100 х =11.2
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Fhre
1)2,5·(4,3-2,1)+10x=17,3. 2)100x-8,7·(21,3+8,7)=0.
2,5·2,2+10x=17,3 Раскрываем скобки:
5,5+10x=17,3 100x-185,31-75,69=0
10x=17,3-5,5 100x-261=0
10x=11,8 100x=261
x=1,18. x=261/100
x=2,61.
3)(15,1+284,9)·0,1-1000x=10,3. 4)(237,9+42,1)·0,25-100x=11,2.
300·0,1-1000x=10,3 280·0,25-100x=11,2
30-1000x=10,3 70-100x=11,2
-1000x=10,3-30 -100x=11,2-70
-1000x= -19,7 -100x= -58,8
x= -19,7/-1000 x= -58,8/-100
x=0,0197. x=0,588.
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Answers & Comments
2,5·2,2+10x=17,3 Раскрываем скобки:
5,5+10x=17,3 100x-185,31-75,69=0
10x=17,3-5,5 100x-261=0
10x=11,8 100x=261
x=1,18. x=261/100
x=2,61.
3)(15,1+284,9)·0,1-1000x=10,3. 4)(237,9+42,1)·0,25-100x=11,2.
300·0,1-1000x=10,3 280·0,25-100x=11,2
30-1000x=10,3 70-100x=11,2
-1000x=10,3-30 -100x=11,2-70
-1000x= -19,7 -100x= -58,8
x= -19,7/-1000 x= -58,8/-100
x=0,0197. x=0,588.