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Tatsouka 2009

Posted byjaehwa September 5, 2020

What is the value of $5$ $\dfrac{2}{6}$ $-$ $4$ $\dfrac{5}{7}$?
A. $\dfrac{13}{21}$ A. $\dfrac{13}{21}$
B. $\dfrac{7}{13}$
C. $\dfrac{14}{13}$
D. $1$
E. $\dfrac{43}{21}$

1. $5$ $\dfrac{2}{6}$ $ - $ $4$ $\dfrac{5}{7}$
$ = \dfrac{32}{6}$ $ - $ $\dfrac{33}{7}$
$ = \dfrac{32\times 7}{6\times 7}- \dfrac{33\times 6}{7\times 6}$
$ = \dfrac{224}{42}-\dfrac{198}{42}$$=\dfrac{{224}-{198}}{42}$$=\dfrac{13}{21}$ 2. No More Steps

Correct! Nice work!

Posted byjaehwaSeptember 5, 2020Posted inUncategorized

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