a) 1 200 : 4 (17+ x)=36 b) 9 x ( x + 5) = 729
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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
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a, x-13=184:8
x-13=23
x=23+13
x=36
Vậy x=36
b,x:7=833:7
x:7=119
x=119x7
x=833
Vậy x=833
c, x+5=729:9
x+5=81
x=81-5
x=76
Vậy x=76
d,50-(17-x)=36
17-x=50-36
17-x=14
x=17-14
x=3
Vậy x=3
Hok tốt
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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
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A)1200:24-(17-y)=36
=>50-(17-y)=36
=>17-y=50-36
=>17-y=14
=>y=17-14=3.
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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
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a) 1200 : 24 - (17-x) = 36
5 - (17-x) = 36
5 -17 + x = 36
x - 12 = 36
x = 48
a) 50-(17-x)=36
(17-x)=50-36
17-x=14
x = 17-14
x = 3
b) (x+5)=729:9
x+5=81
x = 81-5
x = 76
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Câu 1
Số tiền còn lại của Hùng là
\(45000.\frac{3}{5}=27000\)( đồng )
Số tiền ban đầu
\(45000+27000=72000\)( đồng )
Đáp số : 72000 đồng
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a, A= 5x415 x 99 - 4x320x 89 = 5x230x318-22x 227x320
=229x318(2x5-32)=229x318
B=5x29x619-7x229x276=5x29x219x3197x229x318
=238x318(5x3-7x2)=228-318
->A:B= 229x318:228:318=2
\(a,1200:4\left(17+x\right)=36\)
\(4\left(17+x\right)=1200:36\)
\(4\left(17+x\right)=\dfrac{100}{3}\)
\(17+x=\dfrac{25}{3}\)
\(x=\dfrac{25}{3}-17\)
\(x=-\dfrac{26}{3}\)
\(b,9\left(x+5\right)=729\)
\(x+5=729:9\)
\(x+5=81\)
\(x=81-5\)
\(x=76\)