Toán Lớp 7: $1\dfrac{4}{23}$ + $\dfrac{5}{21}$ – $\dfrac{4}{23}$ + 0 , 5 + $\dfrac{16}{21}$
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Toán Lớp 7: $1\dfrac{4}{23}$ + $\dfrac{5}{21}$ – $\dfrac{4}{23}$ + 0 , 5 + $\dfrac{16}{21}$
Comments ( 2 )
= ( {27}/{23} – 4/{23}) + ( 5/{21} + {16}/{21} ) + 0,5
Giải đáp+Lời giải và giải thích chi tiết:
$=$ $\frac{27}{23}$ $+$ $\frac{5}{21}-$ $\frac{4}{23}+$ $\frac{1}{2}+$ $\frac{16}{21}$
$=($ $\frac{27}{23}-$ $\frac{4}{23})+$ $($ $\frac{5}{21}+$ $\frac{16}{21})+$ $\frac{1}{2}$
$=1+1+$ $\frac{1}{2}$
$=2+$ $\frac{1}{2}$
$=$ $\frac{5}{2}$