-0,07(10x-1)=0,3x
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Daję NAJ
-0,7x+0,07 = 0,3x
x=0,07
2)
1- (3x-88)/7=5x
1-3x-88=35x
-87 = 38x
x= -87/38 = - 2 11/38
3)
-x/2 = 3x - (3x+2)/4
-4x/2 = 3x - 3x + 2
-2x = 2
x=-4
4)
(3-2x)/5+8 = (5x+2)/2 - x
(3-2x)/5 = (5x+2)/2 - x - 8
3-2x = 25x+10/2 - 5x - 40
3-2x = 12,5x + 5 - 5x -40
3- 2x = 7,5x -35
9,5x=38
x = 4
5)
2x-11 / 4 + 19 - 2x /2 =2x
2x-11 +19 - 2x /2 = 8x
2x - 11 + 19 - 2x = 16x
16x = 8
x = 1/2
- 0,7x + 0,07 = 0,3x
- 0,7x - 0,3x = - 0,07
- x = - 0,07
x = 0,07
1 - (3x - 88)/7 = 5x
7 -3x + 88 = 35x
35x + 3x = 88 + 7
38x = 95
x =95/38 = 2 i 19/38 = 2 i 1/2
- x/2 = 3x - (3 + 2x)/4
- 2x = 12x - 3 - 2x
- 2x + 2x - 12x = - 3
- 12x = -3
x = 3/12 = 1/4
3 - 3x/2 = 5/8 - (4x - 3)/6
72 - 36x = 20 - 16x + 12
- 36x + 16x = 20 + 12 - 72
- 20x = - 40
x = 40/20 = 2
(3 - 2x)/5 + 8 = (5x + 2)/2 - x
2(3 - 2x) + 80 = 5(5x + 2) - 10x
6 - 4x + 80 = 25x + 10 - 10x
- 4x - 25x + 10x = 10 - 80 - 6
- 19x = - 76
x = 76/19 = 4
(2x - 11)/4 + (19 - 2x)/2 = 2x
2x - 11 + 38 - 4x = 8x
2x - 4x - 8x = 11 - 38
- 10x = - 27
x = 27/10 = 2 i 7/10
1 - [ (x - 2)/4 + 2/3] = x
1 - [ (3x - 6 + 8)/12] = x
1 - (3x + 2)/12 = x
12 - 3x - 2 = 12x
- 3x - 12x = - 12 + 2
- 15x = - 10
x = 10/15 = 2/3
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-0,07(10x-1)=0,3x
-0,7x+0,07 = 0,3x
x=0,07
2)
1- (3x-88)/7=5x
1-3x-88=35x
-87 = 38x
x= -87/38 = - 2 11/38
3)
-x/2 = 3x - (3x+2)/4
-4x/2 = 3x - 3x + 2
-2x = 2
x=-4
4)
(3-2x)/5+8 = (5x+2)/2 - x
(3-2x)/5 = (5x+2)/2 - x - 8
3-2x = 25x+10/2 - 5x - 40
3-2x = 12,5x + 5 - 5x -40
3- 2x = 7,5x -35
9,5x=38
x = 4
5)
2x-11 / 4 + 19 - 2x /2 =2x
2x-11 +19 - 2x /2 = 8x
2x - 11 + 19 - 2x = 16x
16x = 8
x = 1/2
-0,07(10x-1)=0,3x
- 0,7x + 0,07 = 0,3x
- 0,7x - 0,3x = - 0,07
- x = - 0,07
x = 0,07
1 - (3x - 88)/7 = 5x
7 -3x + 88 = 35x
35x + 3x = 88 + 7
38x = 95
x =95/38 = 2 i 19/38 = 2 i 1/2
- x/2 = 3x - (3 + 2x)/4
- 2x = 12x - 3 - 2x
- 2x + 2x - 12x = - 3
- 12x = -3
x = 3/12 = 1/4
3 - 3x/2 = 5/8 - (4x - 3)/6
72 - 36x = 20 - 16x + 12
- 36x + 16x = 20 + 12 - 72
- 20x = - 40
x = 40/20 = 2
(3 - 2x)/5 + 8 = (5x + 2)/2 - x
2(3 - 2x) + 80 = 5(5x + 2) - 10x
6 - 4x + 80 = 25x + 10 - 10x
- 4x - 25x + 10x = 10 - 80 - 6
- 19x = - 76
x = 76/19 = 4
(2x - 11)/4 + (19 - 2x)/2 = 2x
2x - 11 + 38 - 4x = 8x
2x - 4x - 8x = 11 - 38
- 10x = - 27
x = 27/10 = 2 i 7/10
1 - [ (x - 2)/4 + 2/3] = x
1 - [ (3x - 6 + 8)/12] = x
1 - (3x + 2)/12 = x
12 - 3x - 2 = 12x
- 3x - 12x = - 12 + 2
- 15x = - 10
x = 10/15 = 2/3