Luisa resolvió la siguiene ecuación:
2x + 15,70 = 28 - x
Ella realizó los pasos que se indica...
Mathematics, 29.11.2020 04:30 esmemaluma00
Luisa resolvió la siguiene ecuación:
2x + 15,70 = 28 - x
Ella realizó los pasos que se indican:
%+ 2x + 15,70 = + 26-x... (paso 1)
3x + 15,70 = (X -x) + 28 ... (paso 2)
3.t + 15,70 = 28 ... (paso 3)
3x + 15,70 - 15,70 = 28 - 15,70 ... (paso 4)
3x= 12,30 ... (paso 5)
3x = 12,30... (paso 6)
3 3
X= 4,10 ... (paso 7)
¿Qué argumentos justifican el procedimiento aplicado en los pasos 1 y 6? Explica.
Answers: 2
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