Ответ:
Пошаговое объяснение:
1)
(3/4)x - 1/12 = 11/3 |*12
9x - 1 = 44
9x = 44 + 1
9x = 45
x = 45:9
x = 5
2)
3x/2 - 1x/5 = 2,6 |*10
15x - 2x = 26
13x = 26
x = 26:13
x = 2
3)
1,8x - (x - 4,3) = (0,2x + 0,5) - 1,6
1,8x - x + 4,3 = 0,2x + 0,5 - 1,6
0,8x + 4,3 = 0,2x - 1,1
0,8x - 0,2x = -1,1 - 4,3
0,6x = -5,4
x = -5,4 : 0,6
x = -9
4)
20(x - 1) - 20 = 70x
20x - 20 - 20 = 70x
20x - 40 = 70x
70x - 20x = -40
50x = -40
x = -40 : 50
x = -0,8
5)
4,5 - (3x/4 + (5-4x)/6 = 6 |*12
54 - (9x + 10 - 8x) = 72
54 - (x + 10) = 72
54 - x - 10 = 72
x = 54 - 10 - 72
x = -28
6)
(5x+3)/3 + (2x-1)/2 = 3 + (5x+3)/2 |*6
10x + 6 + 6x - 3 = 18 + 15x + 9
16x + 3 = 27 + 15x
16x - 15x = 27 - 3
x = 24
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Answers & Comments
Ответ:
Пошаговое объяснение:
1)
(3/4)x - 1/12 = 11/3 |*12
9x - 1 = 44
9x = 44 + 1
9x = 45
x = 45:9
x = 5
2)
3x/2 - 1x/5 = 2,6 |*10
15x - 2x = 26
13x = 26
x = 26:13
x = 2
3)
1,8x - (x - 4,3) = (0,2x + 0,5) - 1,6
1,8x - x + 4,3 = 0,2x + 0,5 - 1,6
0,8x + 4,3 = 0,2x - 1,1
0,8x - 0,2x = -1,1 - 4,3
0,6x = -5,4
x = -5,4 : 0,6
x = -9
4)
20(x - 1) - 20 = 70x
20x - 20 - 20 = 70x
20x - 40 = 70x
70x - 20x = -40
50x = -40
x = -40 : 50
x = -0,8
5)
4,5 - (3x/4 + (5-4x)/6 = 6 |*12
54 - (9x + 10 - 8x) = 72
54 - (x + 10) = 72
54 - x - 10 = 72
x = 54 - 10 - 72
x = -28
6)
(5x+3)/3 + (2x-1)/2 = 3 + (5x+3)/2 |*6
10x + 6 + 6x - 3 = 18 + 15x + 9
16x + 3 = 27 + 15x
16x - 15x = 27 - 3
x = 24