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lafa1
@lafa1
July 2022
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чему равен корень уравнения
1)3x=28-x
2)5x+12=8x+30
3)33+8x=-5x+72
4)6x-19=-x-10
5)0,7-0,2x=0,3x-1,8
6)0,1x+9=0,2x-4
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Answers & Comments
Alisa22
Verified answer
1) 3x=28-x
3x+x=28
4x=28
x=28/4
x=7
2)5x+12=8x+30
5x-8x=30-12
-3x=18
x=18/-3
x=-6
3)33+8x=-5x+72
8x+5x=72-33
13x=39
x=39/13
x=3
4)6x-19=-x-10
6x+x=19-10
7x=9
x=9/7
x=1 2/7
5)0,7-0,2x=0,3x-1,8
-0,2x-0,3x=-1,8-0,7
-0,5x=-2.5
x=-2,5/-0,5
x=5
6)0,1x+9=0,2x-4
0,1x-0,2x=-9-4
-0,1x=-13
x=-13/-0,1
x=130
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Answers & Comments
Verified answer
1) 3x=28-x3x+x=28
4x=28
x=28/4
x=7
2)5x+12=8x+30
5x-8x=30-12
-3x=18
x=18/-3
x=-6
3)33+8x=-5x+72
8x+5x=72-33
13x=39
x=39/13
x=3
4)6x-19=-x-10
6x+x=19-10
7x=9
x=9/7
x=1 2/7
5)0,7-0,2x=0,3x-1,8
-0,2x-0,3x=-1,8-0,7
-0,5x=-2.5
x=-2,5/-0,5
x=5
6)0,1x+9=0,2x-4
0,1x-0,2x=-9-4
-0,1x=-13
x=-13/-0,1
x=130