Explicación paso a paso:
1 ) x + 8 = 12
x = 12 - 8
x = 4
2 ) 6+ x = 10
x= 10-6
x= 4
3) 2x + 8 = x + 10
2 x - x = 10 - 8
x = 2
4) 4x - 3 = 6+ x
4x - x = 6 + 3
3x =9
x = 3
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Explicación paso a paso:
1 ) x + 8 = 12
x = 12 - 8
x = 4
2 ) 6+ x = 10
x= 10-6
x= 4
3) 2x + 8 = x + 10
2 x - x = 10 - 8
x = 2
4) 4x - 3 = 6+ x
4x - x = 6 + 3
3x =9
x = 3