Respuesta:
La incógnita es 5.
Explicación paso a paso:
12-2x = x-3
-2x-x = -3-12
-3x = -15
x = -15/-3
x = 5
Comprobación:
12-2(5) = 5-3
12-10 = 2
2 = 2
[tex]12 - 2x = x - 3 \\ [/tex]
[tex] 12=x−3+2x \\ [/tex]
[tex] 12 = 3x - 3 \\ [/tex]
[tex] 12+3=3x \\ [/tex]
[tex] 15 = 3x \\ [/tex]
[tex] \frac{15}{3} = x \\ [/tex]
[tex] x = 5 \\ [/tex]
Comprobamos:
[tex]\: \:2−2x=x−3 \\ [/tex]
[tex]12−2×5=5−3 \\ [/tex]
[tex] \: \: \: 12−10=5−3 \\ [/tex]
[tex] \: \: \: \: \: \: 2 = 5 - 3 \\ [/tex]
[tex] \: \: \: \: \: \: \: \: \: 2 = 2 \\ [/tex]
Saludos.
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Respuesta:
La incógnita es 5.
Explicación paso a paso:
12-2x = x-3
-2x-x = -3-12
-3x = -15
x = -15/-3
x = 5
Comprobación:
12-2(5) = 5-3
12-10 = 2
2 = 2
Explicación paso a paso:
[tex]12 - 2x = x - 3 \\ [/tex]
[tex] 12=x−3+2x \\ [/tex]
[tex] 12 = 3x - 3 \\ [/tex]
[tex] 12+3=3x \\ [/tex]
[tex] 15 = 3x \\ [/tex]
[tex] \frac{15}{3} = x \\ [/tex]
[tex] x = 5 \\ [/tex]
Comprobamos:
[tex]\: \:2−2x=x−3 \\ [/tex]
[tex]12−2×5=5−3 \\ [/tex]
[tex] \: \: \: 12−10=5−3 \\ [/tex]
[tex] \: \: \: \: \: \: 2 = 5 - 3 \\ [/tex]
[tex] \: \: \: \: \: \: \: \: \: 2 = 2 \\ [/tex]
Saludos.