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lfif123456
@lfif123456
July 2022
2
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помогите!
1)раскройте скобки и найдите значения выражения:
17,8-(11,7+14,8) - (3,5-12,6)
2)решите уравнение:
0,3(x-2)- 0,2(x+4)=0,6
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Answers & Comments
lidusya13
1)17,8-11,7-14,8-3,5+12,6=0,4;
2)0,3х-0,6-0,2х-0,8=0,6;
0,3х-0,2х=0,6+0,8+0,6;
0,1х=2;
х=2:0,1;
х=20
1 votes
Thanks 2
lfif123456
спасибо большое)))
maxuta3
11.7+14.8=26.5
17 .8-26.5=-8.7
3.5-12.6=-9.1
-8.7-(-9.1)=-8.7+9.1
-8.7+9.1=0,4
1 votes
Thanks 1
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Answers & Comments
2)0,3х-0,6-0,2х-0,8=0,6;
0,3х-0,2х=0,6+0,8+0,6;
0,1х=2;
х=2:0,1;
х=20
17 .8-26.5=-8.7
3.5-12.6=-9.1
-8.7-(-9.1)=-8.7+9.1
-8.7+9.1=0,4