Explicación paso a paso:
1)
2x - 7 = -3
2x = -3 + 7
2x = 4
x = 4/2
x = 2
2)
3x + 5 = -1
3x = - 1 -5
3x = - 6
x = -6/3
x = -2
3)
2x - 8 = 10
2x = 10 + 8
2x = 18
x = 18/2
x = 9
4)
5x - 7 + 2x = 4x + 5
5x + 2x -4x = 5 + 7
7x - 4x = 12
3x = 12
x = 12/3
x = 4
5)
5x - 2x - 4 = x + 7 - 5
5x - 2x - x = 7 - 5 + 4
5x - 3x = 7 - 1
2x = 6
x = 6/2
x = 3
6)
x - 2( x + 1) = 8 - 3 ( x + 1)
x -2x - 2 = 8 -3x -3
x - 2x + 3x = 8 - 3 + 2
4x - 2x = 5 + 2
2x = 7
x = 7/2
7)
2 ( x - 1) - 5 = 14 - x
2x - 2 - 5 = 14 - x
2x + x = 14 + 2 + 5
3x = 21
x = 21/3
x = 7
8)
15x - 10 = 6x - 2 ( x - 1 ) + 3( 1 - x)
15x - 10 = 6x - 2x + 2 + 3 - 3x
15x - 6x + 2x + 3x = 10 + 2 + 3
15x - 6x +5x = 15
15x - x = 15
14x = 15
x = 15/14
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Explicación paso a paso:
1)
2x - 7 = -3
2x = -3 + 7
2x = 4
x = 4/2
x = 2
2)
3x + 5 = -1
3x = - 1 -5
3x = - 6
x = -6/3
x = -2
3)
2x - 8 = 10
2x = 10 + 8
2x = 18
x = 18/2
x = 9
4)
5x - 7 + 2x = 4x + 5
5x + 2x -4x = 5 + 7
7x - 4x = 12
3x = 12
x = 12/3
x = 4
5)
5x - 2x - 4 = x + 7 - 5
5x - 2x - x = 7 - 5 + 4
5x - 3x = 7 - 1
2x = 6
x = 6/2
x = 3
6)
x - 2( x + 1) = 8 - 3 ( x + 1)
x -2x - 2 = 8 -3x -3
x - 2x + 3x = 8 - 3 + 2
4x - 2x = 5 + 2
2x = 7
x = 7/2
7)
2 ( x - 1) - 5 = 14 - x
2x - 2 - 5 = 14 - x
2x + x = 14 + 2 + 5
3x = 21
x = 21/3
x = 7
8)
15x - 10 = 6x - 2 ( x - 1 ) + 3( 1 - x)
15x - 10 = 6x - 2x + 2 + 3 - 3x
15x - 6x + 2x + 3x = 10 + 2 + 3
15x - 6x +5x = 15
15x - x = 15
14x = 15
x = 15/14