Помогите с уравнениями:
1) 7x-3=4x-18
2) 16-4x=22-2x
3) 3x+9=7x+25
4) 3x-19=2x-6
1) 7x-3=4x-18
2) 16-4x=22-2x
3) 3x+9=7x+25
4) 3x-19=2x-6
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Verified answer
1) 7х - 3 = 4х - 18
7х - 4х = 3 - 18
3х = - 15
х = - 15 : 3
х = - 5
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2) 16 - 4х = 22 - 2х
- 4х + 2х = 22 - 16
- 2х = 6
х = 6 : (-2)
х = - 3
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3) 3х + 9 = 7х + 25
3х - 7х = 25 - 9
- 4х = 16
х = 16 : (-4)
х = - 4
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4) 3х - 19 = 2х - 6
3х - 2х = 19 - 6
х = 13