Réponse :
Explications étape par étape
B
Je pense ca
Bonjour, ton exercice me paraît plutôt simple donc je vais t'aider !
Exercice 1:
A = +
A= +
A =
B= /
Diviser deux fractions revient à multiplier son opposé :
B= x
B =
C= -++
On met tout les dénominateurs identiques
-++
C=
D= x
D=
Exercice 2 :
A= - x
A= x
A=
B= - x ( - )
B= x -
B= -
C= - /
C= /
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Lista de comentários
Réponse :
okay
Explications étape par étape
B![\frac{1}{3} *\frac{5}{4} \frac{1*4+3*5}{3*4} \frac{19}{12} \frac{1}{3} *\frac{5}{4} \frac{1*4+3*5}{3*4} \frac{19}{12}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D%20%2A%5Cfrac%7B5%7D%7B4%7D%20%5Cfrac%7B1%2A4%2B3%2A5%7D%7B3%2A4%7D%20%5Cfrac%7B19%7D%7B12%7D)
Je pense ca
Réponse :
Bonjour, ton exercice me paraît plutôt simple donc je vais t'aider !
Explications étape par étape
Exercice 1:
A =
+ ![\frac{1}{8} \frac{1}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B8%7D)
A =
+ ![\frac{1}{8} \frac{1}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B8%7D)
A=
+ ![\frac{1}{8} \frac{1}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B8%7D)
A =![\frac{7}{8} \frac{7}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B8%7D)
B=
/ ![\frac{4}{5} \frac{4}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B5%7D)
Diviser deux fractions revient à multiplier son opposé :
B=
x ![\frac{5}{4} \frac{5}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B4%7D)
B =![\frac{5}{12} \frac{5}{12}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B12%7D)
C=
-
+
+![\frac{1}{12} \frac{1}{12}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B12%7D)
On met tout les dénominateurs identiques
C=
-
+
+![\frac{3}{36} \frac{3}{36}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B36%7D)
C=![\frac{17}{36} \frac{17}{36}](https://tex.z-dn.net/?f=%5Cfrac%7B17%7D%7B36%7D)
D=
x ![\frac{5}{6} \frac{5}{6}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B6%7D)
D=![\frac{3x5}{4x6} \frac{3x5}{4x6}](https://tex.z-dn.net/?f=%5Cfrac%7B3x5%7D%7B4x6%7D)
D=![\frac{15}{24} \frac{15}{24}](https://tex.z-dn.net/?f=%5Cfrac%7B15%7D%7B24%7D)
Exercice 2 :
A=
-
x ![\frac{14}{9} \frac{14}{9}](https://tex.z-dn.net/?f=%5Cfrac%7B14%7D%7B9%7D)
A=
x ![\frac{14}{9} \frac{14}{9}](https://tex.z-dn.net/?f=%5Cfrac%7B14%7D%7B9%7D)
A=![\frac{-1x14}{7x9} \frac{-1x14}{7x9}](https://tex.z-dn.net/?f=%5Cfrac%7B-1x14%7D%7B7x9%7D)
A=![\frac{-14}{63} \frac{-14}{63}](https://tex.z-dn.net/?f=%5Cfrac%7B-14%7D%7B63%7D)
B= -
x (
-
)
B=
x -![\frac{1}{3} \frac{1}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D)
B= -![\frac{7}{24} \frac{7}{24}](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B24%7D)
C=
-
/ ![\frac{4x7}{3x1} \frac{4x7}{3x1}](https://tex.z-dn.net/?f=%5Cfrac%7B4x7%7D%7B3x1%7D)
C=
/ ![\frac{28}{3} \frac{28}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B28%7D%7B3%7D)
C=![\frac{7x3}{3x28} \frac{7x3}{3x28}](https://tex.z-dn.net/?f=%5Cfrac%7B7x3%7D%7B3x28%7D)
C=![\frac{21}{84} \frac{21}{84}](https://tex.z-dn.net/?f=%5Cfrac%7B21%7D%7B84%7D)