D/8kg 12g=...............kg 12m29cm=................cm 2/ tính giá trị của biểu:7/4-5/12x6/7

$\text{8kg 12g = 8,012kg}$

$\text{→ 8kg 12g = 8$\frac{12}{1000}$kg = 8,012kg}$

$\text{12m 29cm = 1229cm}$

$\text{→ 12m = 1200cm}$

$\text{→ 1200cm + 29cm = 1229cm}$

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$\text{$\frac{7}{4}$ - $\frac{5}{12}$ × $\frac{6}{7}$}$

$\text{→ $\frac{7}{4}$ - $\frac{30}{84}$}$

$\text{→ $\frac{147}{84}$ - $\frac{30}{84}$}$

$\text{→ $\frac{117}{84}$}$

$#Roa$