2 câu trả lời
Đáp án:
$1$
Giải thích các bước giải:
$\dfrac{15}{100}+30\%+\dfrac{28}{100}+27\%$
$=\dfrac{15}{100}+\dfrac{30}{100}+\dfrac{28}{100}+\dfrac{27}{100}$
$=\dfrac{15+30+28+27}{100}$
$=\dfrac{\left(15+30\right)+\left(28+27\right)}{100}$
$=\dfrac{45+55}{100}$
$=\dfrac{100}{100}$
$=1$
$\text{$\dfrac{15}{100}$ + 30% + $\dfrac{28}{100}$ + 27%}$
$\text{= $\dfrac{15}{100}$ + $\dfrac{30}{100}$ + $\dfrac{28}{100}$ + $\dfrac{27}{100}$}$
$\text{= $\dfrac{15 + 30 + 28 + 27}{100}$}$
$\text{= $\dfrac{(15 + 30) + (28 + 27)}{100}$}$
$\text{= $\dfrac{45 + 55}{100}$}$
$\text{= $\dfrac{100}{100}$}$
$\text{= 1}$
$\textit{Ha1zzz}$
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