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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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Koteileleyy
Verified answer
2,5(4,3-2,1)+10х=17,3
2,5*2,2+10х=17,3
5,5+10х=17,3
10х=17,3-5,5
х=11,8:10
х=1,18
100х-8,7(21,3+8,7)=0
100х-8,7*30=0
100х=261
х=261:100
х=2,61
(15,1+284,9)*0,1-1000х=10,3
300*0,1-1000х=10,3
30-10,3=1000х
-1000х=-19,7
х=0,0197
(237,9+42,1)*0,25-100х=11,2
280*0,25-100х=11,2
70-100х=11,2
-100х=11,2-70
-100х=-58,8
х=58,8:100
х=0,588
7 votes
Thanks 9
irка010708
1) 2,5×(4,3-2,1)+10х=17,3
2,5×2,2+10х=17,3
5,5+10х=17,3
10х = 17,3 -5,5
10х=11,8
х=11,8:10
х=1,18
5,5 +(10×1,18 )=17,3
5,5+11,8=17,3
17,3=17,3
2) 100х-8,7×(21,3+8,7)=0
100х-8,7×30=0
100х=261
х=261:100
х=2,61
100×2,61 -261=0
261-261=0
3) (15,1+284,9)×0,1-1000х=10,3
300 ×0,1 -1000х =10,3
-1000х =10,3-30
-1000х =-19,7
х=19,7:1000
х=0,0197
30- 1000×0,0197=10,3
30-19,7=10,3
10,3 =10,3
4) (237,9+42,1)×0,25 -100х=11,2
280×0,25 -100х =11,2
-100х=11,2-70
-100х =-58,8
х=58,8:100
х =0,588
70-100×0,588 =11,2
70 -58,8=11,2
11,2 =11,2
7 votes
Thanks 8
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Verified answer
2,5(4,3-2,1)+10х=17,32,5*2,2+10х=17,3
5,5+10х=17,3
10х=17,3-5,5
х=11,8:10
х=1,18
100х-8,7(21,3+8,7)=0
100х-8,7*30=0
100х=261
х=261:100
х=2,61
(15,1+284,9)*0,1-1000х=10,3
300*0,1-1000х=10,3
30-10,3=1000х
-1000х=-19,7
х=0,0197
(237,9+42,1)*0,25-100х=11,2
280*0,25-100х=11,2
70-100х=11,2
-100х=11,2-70
-100х=-58,8
х=58,8:100
х=0,588
2,5×2,2+10х=17,3
5,5+10х=17,3
10х = 17,3 -5,5
10х=11,8
х=11,8:10
х=1,18
5,5 +(10×1,18 )=17,3
5,5+11,8=17,3
17,3=17,3
2) 100х-8,7×(21,3+8,7)=0
100х-8,7×30=0
100х=261
х=261:100
х=2,61
100×2,61 -261=0
261-261=0
3) (15,1+284,9)×0,1-1000х=10,3
300 ×0,1 -1000х =10,3
-1000х =10,3-30
-1000х =-19,7
х=19,7:1000
х=0,0197
30- 1000×0,0197=10,3
30-19,7=10,3
10,3 =10,3
4) (237,9+42,1)×0,25 -100х=11,2
280×0,25 -100х =11,2
-100х=11,2-70
-100х =-58,8
х=58,8:100
х =0,588
70-100×0,588 =11,2
70 -58,8=11,2
11,2 =11,2