Respuesta:
20
Explicación paso a paso:
8 - 5x + 3(2 + x) = -(x + 6)
8 - 5x + 6 + 3x = -x - 6
14 -2x = -x - 6
-2x + x = -6 - 14
-x = -20
(-1)-x = -20(-1)
x = 20
un saludo :)
8 - 5x + 3(2 + x) = - (x + 6)
14 - 2x = -x - 6
14 + 6 = -x + 2x
20 = x
*
Comprobamos:
8 - 5(20) + 3(2 + 20) = - (20 + 6)
8 - 100 + 3(22) = -26
8 - 100 + 66 = -26
-92 + 66 = -26
-26 = -26
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Respuesta:
20
Explicación paso a paso:
8 - 5x + 3(2 + x) = -(x + 6)
8 - 5x + 6 + 3x = -x - 6
14 -2x = -x - 6
-2x + x = -6 - 14
-x = -20
(-1)-x = -20(-1)
x = 20
un saludo :)
Verified answer
Explicación paso a paso:
8 - 5x + 3(2 + x) = - (x + 6)
8 - 5x + 6 + 3x = -x - 6
14 - 2x = -x - 6
14 + 6 = -x + 2x
20 = x
*
Comprobamos:
8 - 5x + 3(2 + x) = - (x + 6)
8 - 5(20) + 3(2 + 20) = - (20 + 6)
8 - 100 + 3(22) = -26
8 - 100 + 66 = -26
-92 + 66 = -26
-26 = -26