Explicación paso a paso
x + 3 = 2x -7
x - 2x = - 7 - 3
- x = -10
x = - 10 : (-1)
x = 10
verificación
10 + 3 = 2 . 10 -7
13 = 20 - 7
13 = 13
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Explicación paso a paso
x + 3 = 2x -7
x - 2x = - 7 - 3
- x = -10
x = - 10 : (-1)
x = 10
verificación
10 + 3 = 2 . 10 -7
13 = 20 - 7
13 = 13