tìm x,biết:
✿ x:3-29=728
Những câu hỏi liên quan
Tìm số tự nhiên x biết :
a ) 3571 - ( 1265 + x ) = 728 : 14
b ) ( 15 +4x ) ÷ 29 + 32 = 47
c ) 50 + 144 ÷ ( x + 6 )2 = 54
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a) 3571 - ( 1265 + x ) = 728 : 14
3571 - ( 1265 + x ) = 52
1265 + x = 3571 - 52
1265 + x = 3519
x = 3519 - 1265
x = 2254
b) ( 15 + 4x ) : 29 + 32 = 47
( 15 + 4x ) : 29 = 47 - 32
( 15 + 4x ) : 29 = 15
15 + 4x = 15 . 49
15 + 4x = 735
4x = 735 - 15
4x = 720
x = 180
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a) 3571 - ( 1265 + x ) = 728 : 14
3571 - ( 1265 + x ) = 52
1265 + x = 3571 - 52
1265 + x = 3519
x = 3519 - 1265
x = 2254
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a) 3571 - ( 1265 + x ) = 728 : 14
3571 - ( 1265 + x ) = 52
1265 + x = 3571 - 52
1265 + x = 3519
x = 3519 - 1265
x = 2254
b) ( 15 + 4x ) : 29 + 32 = 47
( 15 + 4x ) : 29 = 47 - 32
( 15 + 4x ) : 29 = 15
15 + 4x = 15 . 49
15 + 4x = 735
4x = 735 - 15
4x = 720
x = 180
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Xem thêm câu trả lời
Tìm x:
(x+1)+(x+3)+(x+5)+(x+7)+...+(x+51)=728
x = 28
CHÚC BẠN HỌC TỐT !
Mong các bn ủng hộ cho mik , thank you !
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Tìm x biết: x÷3 = 29 ?
A. x = 87
B. x = 67
C. x = 77
D. x = 97
Tìm x, biết: (x+1)+(x+3)+(x+5)+(x+7) ... +(x 29)=285
(x + 1) + (x + 3) + (x + 5) + (x + 7) +... + (x + 29) = 285
Ta có dãy số:
1 + 3 + 5 + 7 +...+ 29
Khoảng cách giữa các số hạng liên tiếp là: 2 đơn vị
Số số hạng (số lượng các x) là: (29 - 1) : 2 + 1 = 15
Tổng của dãy trên là: (1 + 29) x 15 : 2 = 225
⇒ X x 15 = 285 - 255
X x 15 = 30
X = 30 : 15 = 2
Vậy số cần tìm là: 2
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Tìm chữ số x biết:
a) 36,75 x 4 < 367544/10000
b) ab5, 728 < ab5,7x4 < ab5, 755
Làm nhanh mình sẽ k cho bạn
câu a: 36,75<x4<367544/10000
= 36,75<x*4<36,754
= x=9,1
câu b: 125,728;125,734;125,755
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Tìm x biết:
a, x÷6 = 74
b, x + 253 = 639
c, x - 29 = 56×3
a) x : 6 = 14
x = 14 x 6
x = 84
b) x + 253 = 639
x = 639 - 253
x = 386
c) x - 29 = 56 x 3
x = 56 x 3
x = 168 + 29
x = 197
Tìm x biết:
5x - x = 29 - 36 :3
5x - x = 29 - 36 : 3
4x = 29 - 36 : 3
4x = 29 - 12
4x = 17
x = 17 : 4
x = 4,25
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Tìm số tự nhiên , biết: 3^x nhân 5 ^ 2 + 3^x = 3^29 nhân 26 .
\(3^x.5^2+3^x=3^{29}.26\)
\(3^x\left(5^2+1\right)=3^{29}.26\)
\(3^x.26=3^{29}.26\)
\(3^x=3^{29}\)
⇒ \(x=29\)
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Tìm số nguyên x,biết
(3-x)+(x-5)=29-x
15+x-(3+x)=x-14
\(\left(3-x\right)+\left(x-5\right)=29-x\)
\(3-x+x-5+x=29\)
\(x-2=29\)
\(x=31\)
vậy \(x=31\)
\(15+x-\left(3+x\right)=x-14\)
\(15+x-3-x-x=-14\)
\(-x+12=-14\)
\(-x=-26\)
\(x=26\)
vậy \(x=26\)
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a, => 3-x+x-5 = 29-x
=> -2 = 29-x
=> x=29-(-2) = 31
b, => 15+x-3-x=x-14
=> 12=x-14
=> x=12+14=26
Tk mk nha
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1,
(3-x)+(x-5) =29-x
=> (x-x) + (3-5) = 29 - x
=> -2 = 29 -x
=> -31 = -x
Vậy x=31
2,
15+x-(3+x)=x-14
=> (x-x) + (15-3) = x-14
=> 12 = x-14
=> 12+14 =x
Vậy x= 26
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tìm x biết (29-x)(29+x)=-60
(29-x)(29+x)=-60
29-x=-60
x=-29-(-60)
x=.........
(29+x)=-60
x=-60-29
x=.............
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