a) [tex]\frac{2}{4}+\frac{-3}{4}[/tex]
[tex]\frac{-3}{4}=-\frac{3}{4}[/tex]
[tex]=\frac{2}{4}-\frac{3}{4}[/tex]
[tex]=\frac{2-3}{4}[/tex]
[tex]=\frac{-1}{4}[/tex]
[tex]=-\frac{1}{4}[/tex]
b) [tex]\frac{3}{7}+\frac{2}{7}[/tex]
[tex]=\frac{3+2}{7}[/tex]
[tex]=\frac{5}{7}[/tex]
c) [tex]-\frac{4}{1}+\frac{3}{1}[/tex]
[tex]=-4+3[/tex]
[tex]=-1[/tex]
d) [tex]-\frac{3}{1}+\frac{-3}{1}[/tex]
[tex]=-3-3[/tex]
[tex]=-6[/tex]
e) [tex]\frac{1}{4}+\frac{-3}{4}[/tex]
[tex]=\frac{1-3}{4}[/tex]
[tex]=\frac{-2}{4}[/tex]
[tex]=-\frac{2}{4}[/tex]
[tex]=-\frac{1}{2}[/tex]
[tex]Buena\:suerte\:con\:tus\:tareas\::ProfeAndresFelipe :)[/tex]
Explicación paso a paso:
Pregunta 1
[tex]\dfrac{2}{4}+\dfrac{\left(-3\right)}{4}[/tex]
[tex]\dfrac{2-3}{4}[/tex]
[tex]\dfrac{-1}{4}[/tex]
[tex]=-\dfrac{1}{4}[/tex]
Pregunta 2
[tex]\dfrac{3}{7}+\dfrac{2}{7}[/tex]
[tex]\dfrac{3+2}{7}[/tex]
[tex]=\dfrac{5}{7}[/tex]
Pregunta 3
[tex]-4/1+3/1[/tex]
[tex]-4+3[/tex]
Pregunta 4
[tex]-3/1+\left(-3\right)/1\\-3+\left(-3\right)/1\\-3-3\\=-6[/tex]
Pregunta 5
[tex]\dfrac{1}{4}+\dfrac{\left(-3\right)}{4}[/tex]
[tex]\dfrac{1-3}{4}[/tex]
[tex]\dfrac{-2}{4}[/tex]
[tex]-\dfrac{2}{4}[/tex]
[tex]=-\dfrac{1}{2}[/tex]
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RESOLVER:
a) [tex]\frac{2}{4}+\frac{-3}{4}[/tex]
[tex]\frac{-3}{4}=-\frac{3}{4}[/tex]
[tex]=\frac{2}{4}-\frac{3}{4}[/tex]
[tex]=\frac{2-3}{4}[/tex]
[tex]=\frac{-1}{4}[/tex]
[tex]=-\frac{1}{4}[/tex]
b) [tex]\frac{3}{7}+\frac{2}{7}[/tex]
[tex]=\frac{3+2}{7}[/tex]
[tex]=\frac{5}{7}[/tex]
c) [tex]-\frac{4}{1}+\frac{3}{1}[/tex]
[tex]=-4+3[/tex]
[tex]=-1[/tex]
d) [tex]-\frac{3}{1}+\frac{-3}{1}[/tex]
[tex]=-3-3[/tex]
[tex]=-6[/tex]
e) [tex]\frac{1}{4}+\frac{-3}{4}[/tex]
[tex]=\frac{1-3}{4}[/tex]
[tex]=\frac{-2}{4}[/tex]
[tex]=-\frac{2}{4}[/tex]
[tex]=-\frac{1}{2}[/tex]
[tex]Buena\:suerte\:con\:tus\:tareas\::ProfeAndresFelipe :)[/tex]
Explicación paso a paso:
¡Buenas!
Pregunta 1
[tex]\dfrac{2}{4}+\dfrac{\left(-3\right)}{4}[/tex]
[tex]\dfrac{2-3}{4}[/tex]
[tex]\dfrac{-1}{4}[/tex]
[tex]=-\dfrac{1}{4}[/tex]
Pregunta 2
[tex]\dfrac{3}{7}+\dfrac{2}{7}[/tex]
[tex]\dfrac{3+2}{7}[/tex]
[tex]=\dfrac{5}{7}[/tex]
Pregunta 3
[tex]-4/1+3/1[/tex]
[tex]-4+3[/tex]
[tex]=-1[/tex]
Pregunta 4
[tex]-3/1+\left(-3\right)/1\\-3+\left(-3\right)/1\\-3-3\\=-6[/tex]
Pregunta 5
[tex]\dfrac{1}{4}+\dfrac{\left(-3\right)}{4}[/tex]
[tex]\dfrac{1-3}{4}[/tex]
[tex]\dfrac{-2}{4}[/tex]
[tex]-\dfrac{2}{4}[/tex]
[tex]=-\dfrac{1}{2}[/tex]
¡Saludos!