Respuesta:
4x - 20 = 15 -3x
4x + 3x = 15 - 20
7x = -5
x = - 5 ÷ 7
x= -0.714285714
x= -5/7
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Respuesta:
4x - 20 = 15 -3x
4x + 3x = 15 - 20
7x = -5
x = - 5 ÷ 7
x= -0.714285714
x= -5/7