Сергей Янков
Оракул
(61449)
2 дня назад
(-15x - 6)*3 = 72
-15x - 6 = 24
-15x = 30
x = -2
-7(4 - 11x) = -42
4 - 11x = 6
-11x = 2
x = -2/11
2x = 18 - x
3x = 18
x = 6
7x + 3 = 30 - 2x
9x = 27
x = 3
7 - 2x = 3x - 18
-5x = -25
x = 5
0,2x + 2,7 = 1,4 - 1,1x
1,3x = -1,3
x = -1
5,4 - 1,5x = 0,3x - 3,6
-1,8x = -9
x = 5
3/8x + 15 = 1/6x + 10
3/8x - 1/6x = 10 - 15
9/24x - 4/24x = -5
5/24x = -5
x = -5 : 5/24
x = -5 *24/5
x = =24
x+2/5 = 2x-3/8
10x-15 = 8x + 16
2x = 31
x = 15,5
0,3/x+4 = 0,7/x-8
ОДЗ: х не равно -4; 8
0,7x + 2,8 = 0,3x - 2,4
0,4x = -5,2
x = -13
Сергей ЯнковОракул (61449)
2 дня назад
(-15x - 6)*3 = 72
-15x - 6 = 24
-15x = 30
x = -2
-7(4 - 11x) = -42
4 - 11x = 6
-11x = 2
x = -2/11
2x = 18 - x
3x = 18
x = 6
7x + 3 = 30 - 2x
9x = 27
x = 3
7 - 2x = 3x - 18
-5x = -25
x = 5
0,2x + 2,7 = 1,4 - 1,1x
1,3x = -1,3
x = -1
5,4 - 1,5x = 0,3x - 3,6
-1,8x = -9
x = 5
3/8x + 15 = 1/6x + 10
3/8x - 1/6x = 10 - 15
9/24x - 4/24x = -5
5/24x = -5
x = -5 : 5/24
x = -5 *24/5
x = =24
x+2/5 = 2x-3/8
10x-15 = 8x + 16
2x = 31
x = 15,5
0,3/x+4 = 0,7/x-8
ОДЗ: х не равно -4; 8
0,7x + 2,8 = 0,3x - 2,4
0,4x = -5,2
x = -13