Toán Lớp 7: Tính 5/4-5/6:(3/8-1/6)+11/12
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Toán Lớp 7: Tính 5/4-5/6:(3/8-1/6)+11/12
Comments ( 2 )
$=\dfrac{5}{4}-$$\dfrac{5}{6}:$$(\dfrac{9}{24}-\dfrac{4}{24})+$$\dfrac{11}{12}$
$=\dfrac{5}{4}-$$\dfrac{5}{6}:$$\dfrac{5}{24}+$$\dfrac{11}{12}$
$=\dfrac{5}{4}-$$\dfrac{20}{24}:$$\dfrac{5}{24}+$$\dfrac{11}{12}$
$=\dfrac{5}{4}-$$4+$$\dfrac{11}{12}$
$=\dfrac{15}{12}-$$\dfrac{48}{12}+$$\dfrac{11}{12}$
$=\dfrac{15-48+11}{12}$
$=\dfrac{-22}{12}$
$=\dfrac{-11}{6}$