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\(a.5+a=360:6\)
\(a\left(5+1\right)=60\)
\(a.6=60\)
\(a=\frac{60}{6}\)
Vậy\(a=10\)
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Bài làm
720 : (X x 2+ X x 3) = 2 x 3
720 : [ X x ( 2 + 3 ) ] = 6
720 : X x 5 = 6
X x 5= 720 : 6
X x 5 = 120
X = 120 : 5
X = 24
Vậy X = 24
# Chúc bạn học tốt #
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720 : ( a x 2 + a x 3 ) = 6
a x 2 + a x 3 = 720 : 6 = 120
a x 5 = 120
a = 120 : 5 = 24
720 :( a x 2 +a x3) = 2 x3
=> 720 : ( a x 5 ) = 6
=> ax5 = 720 :6
=> a x 5 = 120
=> a = 120 :5
=> a = 24
≧◉◡◉≦
![](https://rs.olm.vn/images/avt/0.png?1311)
720 :[x +2 . x +3] =2.3
720:(x+2.x+3)=6
x+2.x+3=120
x.(2+3)=120
x.5=120
x=24
![](https://rs.olm.vn/images/avt/0.png?1311)
720:(ax2+ax30)=2x6
(=)720:[ax(2+30)]=12
(=)720:(ax32)=12
(=)ax32=720:12
(=)ax32=60
(=)a=60:32
(=)a=15/8
![](https://rs.olm.vn/images/avt/0.png?1311)
câu 1 giống các bn ấy nhưng ko bít cách làm
720 : ( a * 2 + a * 3 ) = 2 * 3
720 : ( a * 5 ) = 6
720 : 6 : 5
= 120 : 5
a = 24
![](https://rs.olm.vn/images/avt/0.png?1311)
\(720:\left(x\times2+x\times3\right)=2\times3\)
\(720:\left(x\times5\right)=6\)
\(x\times5=720:6\)
\(x\times5=120\)
\(x=120:5\)
\(x=24\)
Ta có \(720\div\left(a\times2+a\times3\right)=2\times3\)
\(\Rightarrow720\div\left(5\times a\right)=6\)
\(\Rightarrow5\times a=720\div6\)
\(\Rightarrow5\times a=120\)
\(\Rightarrow a=120\div5\)
\(\Rightarrow a=24\)
720:(a*2+a*3)=6
a*2+a*3=720:6
a*2+a*3=120
a*5=120
a=120:5
a=24