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b. 9 × ( x + 5) = 729
x + 5 = 729 : 9
x + 5 = 81
x = 81 - 5
x = 76
![](https://rs.olm.vn/images/avt/0.png?1311)
b. 9 × ( x + 5 ) = 729
x + 5 = 729 : 9
x + 5 = 81
x = 81 – 5
x =76
![](https://rs.olm.vn/images/avt/0.png?1311)
b. 9 × ( x + 5 ) = 729
x + 5 = 729 : 9
x + 5 = 81
x = 81 – 5
x =76
![](https://rs.olm.vn/images/avt/0.png?1311)
a) (9458-x)x5=41195 b) (9x x)x6=23490
9458-x =41195:5 9 x x =23490:6
9458-x =8239 9 x x =3916
x=9458-8239 x = 3915:9
x=1219 x=435
c)9x(x+5)=729
x+5=729:9
x+5=81
x=81-5
x=76 k mk nha
a) (9458 - X) x 5 = 41195
9458 - X = 41195 : 5
9458 - X = 8239
X = 9458 - 8239
X = 1219
b) (9 x X) x 6 = 23490
9 x X = 23490 : 6
9 x X = 3915
X = 3915 : 9
X = 435
c) 9 x (X + 5) = 729
X + 5 = 729 : 9
X + 5 = 81
X = 81 - 5
X = 76
![](https://rs.olm.vn/images/avt/0.png?1311)
1)
1200 : 24 - ( 17 - x ) = 36
50 - ( 17 - x ) = 36
17 - x = 50 - 36
17 - x = 14
x = 17 - 14
x = 3
9 x ( x + 5 ) = 729
x + 5 = 729 : 9
x + 5 = 81
x = 81 - 5
x = 76
1200:24-(17-x)=36 9.(x+5)=729
50 -(17-x)=36 x+5 =729:9
17-x =50-36 x+5 =81
17-x =14 x =81-5
x =17-14 x =76
x =3
![](https://rs.olm.vn/images/avt/0.png?1311)
a, => x-13 = 184 : 8 = 23
=> x = 23 + 13 = 36
b, => x : 7 = 833 : 7 = 119
=> x = 119 x 7 = 833
c, => x+5 = 729 : 9 = 81
=> x = 81 - 5 = 76
d, => 50 - (17-x) = 36
=> 17-x = 50 - 36 = 14
=> x = 17 - 14 = 3
Tk mk nha
a)(x-13)*8=184
x-13=184:8
x-13=23
x=23+13
x=36
b)7*(x:7)=833
x:7=833:7=119
x=119*7=833
Chỉ làm thế thôi , làm tiếp
![](https://rs.olm.vn/images/avt/0.png?1311)
729 : ( y x 9 ) = 27
y x 9 = 729 : 27
y x 9 = 27
y = 27 : 9
y = 3
Chúc bạn học tốt >w<
\(729:\left(y\times9\right)=27\)
\(y\times9=729:27\)
\(y\times9=27\)
\(y=27:9\)
\(y=3\)
Vậy \(y=3\)
![](https://rs.olm.vn/images/avt/0.png?1311)
1200 : 24 - (17 - x) = 36
50 - (17 - x) = 36
17 - x = 50 - 36
17 - x = 14
x = 17 - 14
x = 3
b) 9 . (x + 5) = 729
x + 5 = 729 : 9
x + 5 = 81
x = 81 - 5
x = 76
\(1200:24-\left(17-x\right)=36\)
\(\Rightarrow50-\left(17-x\right)=36\)
\(\Rightarrow17-x=50-36\)
\(\Rightarrow17-x=14\)
\(\Rightarrow x=17-14\)
\(\Rightarrow x=3\)
Vậy x = 3
\(9.\left(x+5\right)=729\)
\(\Rightarrow x+5=729:9\)
\(\Rightarrow x+5=81\)
\(\Rightarrow x=81-5\)
\(\Rightarrow x=76\)
Vậy x = 76
![](https://rs.olm.vn/images/avt/0.png?1311)
\(x\) \(\times\) \(\dfrac{1}{4}\) = 6 : 1 : 2
\(x\) \(\times\) \(\dfrac{1}{4}\) = 6:2
\(x\) \(\times\) \(\dfrac{1}{4}\) = 3
\(x\) = 3 : \(\dfrac{1}{4}\)
\(x\) = 12
= 9 * ( x + 5 ) = 729
= ( 729 : 9 ) - 5 = x
= 81 - 5 = x
= 76 = x
Vậy x = 76
Thử : 9 * ( 76 + 5 ) = 729
= 9 * 81 = 729
Đáp số : 76
9*(x+5)=729
x+5=729/9
x+5=81
x=81-5
x=76
Vậy x= 76