1)
8x + 10 = 0
8x = - 10
x = -10/8
x = -1,25
2)
-5x - 7 = 0
-5x = 7
x = -7/5
x = -1,4
3)
10x+3 = 5
10x = 5-3
10x = 2
x = 2/10
x = 0,2
4)
-8x + 9 = -7
-8x = -16
x = 16/8
x = 2
5)
-3x + 4 = 7x
10x = 4
x = 4/10
x = 0,4
6)
x + 12 = 3x
2x = 12
x = 12/2
x = 6
7)
-7-x=3x+17
4x = 24
x = 24/4
8)
x/2 + x/3 = 4
3x+2x / 6 = 4
5x / 6 = 4
5x = 24
x = 24/5
x = 4.8
9 не вижу
1)
8x + 10 = 0
8x = - 10
x = -10/8
x = -1,25
2)
-5x - 7 = 0
-5x = 7
x = -7/5
x = -1,4
3)
10x+3 = 5
10x = 5-3
10x = 2
x = 2/10
x = 0,2
4)
-8x + 9 = -7
-8x = -16
x = 16/8
x = 2
5)
-3x + 4 = 7x
10x = 4
x = 4/10
x = 0,4
6)
x + 12 = 3x
2x = 12
x = 12/2
x = 6
7)
-7-x=3x+17
4x = 24
x = 24/4
x = 6
8)
x/2 + x/3 = 4
3x+2x / 6 = 4
5x / 6 = 4
5x = 24
x = 24/5
x = 4.8
9 не вижу