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mlisow2owhd9t
@mlisow2owhd9t
September 2021
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Помогите №107 заранее спасибо!
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jekadva
1)
0,65*(2x+1)=2,5*1,3
1,3x+0,65=3,25
1,3x=3,25-0,65
1,3x=2,6
x=2,6:1,3
x=2
2)
13*(4x-1,9)=3,25*0,4
52x-24,7=1,3
52x=1,3+24,7
52x=26
x=26:52
x=0,5
3)
2,7*(3x+1)=9*1,2
8,1x+2,7=10,8
8,1x=10,8-2,7
8,1x=8,1
x=8,1:8,1
x=1
4)
1,8*(6x+1)=7,2*2,5
10,8x+1,8=18
10,8x=18-1,8
10,8x=16,2
x=16,2:10,8
x=1,5
5)
1,8*(3x+0,6)=6*2,88
5,4x+1,08=17,28
5,4x=17,28-1,08
5,4x=16,2
x=16,2:5,4
x=3
6)
0,375*(x-2,8)=0,75*0,6
0,375x-1,05=0,45
0,375x=0,45+1,05
0,375x=1,5
x=1,5:0,375
x=4
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Answers & Comments
0,65*(2x+1)=2,5*1,3
1,3x+0,65=3,25
1,3x=3,25-0,65
1,3x=2,6
x=2,6:1,3
x=2
2)
13*(4x-1,9)=3,25*0,4
52x-24,7=1,3
52x=1,3+24,7
52x=26
x=26:52
x=0,5
3)
2,7*(3x+1)=9*1,2
8,1x+2,7=10,8
8,1x=10,8-2,7
8,1x=8,1
x=8,1:8,1
x=1
4)
1,8*(6x+1)=7,2*2,5
10,8x+1,8=18
10,8x=18-1,8
10,8x=16,2
x=16,2:10,8
x=1,5
5)
1,8*(3x+0,6)=6*2,88
5,4x+1,08=17,28
5,4x=17,28-1,08
5,4x=16,2
x=16,2:5,4
x=3
6)
0,375*(x-2,8)=0,75*0,6
0,375x-1,05=0,45
0,375x=0,45+1,05
0,375x=1,5
x=1,5:0,375
x=4