giúp mình mình cần gấp lắm 6 câu về rút gọn 15/12 26/48 51/27 8/40 72/100 9/180
2 câu trả lời
`15/12=(15:3)/(12:3)=5/4`
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`26/48=(26:2)/(48:2)=13/24`
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`51/27=(51:3)/(27:3)=17/9`
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`8/40=(8:8)/(40:8)=1/5`
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`72/100=(72:4)/(100:4)=18/25`
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`9/180=(9:9)/(180:9)=1/20`
Đáp án+Giải thích các bước giải:
$\dfrac{15}{12}$ = $\dfrac{15 : 3}{12 : 3}$ = $\dfrac{5}{4}$
$\dfrac{26}{48}$ = $\dfrac{26 : 2}{48 : 2}$ = $\dfrac{13}{24}$
$\dfrac{51}{27}$ = $\dfrac{51 : 3}{27 : 3}$ = $\dfrac{17}{9}$
$\dfrac{8}{40}$ = $\dfrac{8 : 8}{40 : 8}$ = $\dfrac{1}{5}$
$\dfrac{72}{100}$ = $\dfrac{72 : 4}{100 : 4}$ = $\dfrac{18}{25}$
$\dfrac{9}{180}$ = $\dfrac{9 : 9}{180 : 9}$ = $\dfrac{1}{20}$