tìm x:
\(697:\frac{15.x+364}{x}=17\)
\(92.4-27=\frac{x+350}{x}+315\)
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tìm x:
\(697:\frac{15.x+364}{x}=17\)
\(92.4-27=\frac{x+350}{x}+315\)
1.TÌM X,
A. 697:\(\frac{15.X+364}{X}\)=17
B. 92.4-27=\(\frac{X+350}{X}\)+315
a) \(697:\frac{15X+364}{X}=17\)
\(\Rightarrow\frac{15X+364}{X}=697:17=41\)
\(\Rightarrow15X+364=41X\)
\(\Rightarrow364=41X-15X=26X\)
\(\Rightarrow X=14\)
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A.suy ra: 15x+364/x=41
suy ra: 15x/x+364/x=41
suy ra: 15 + 364/x=41
suy ra: 364/x =26
suy ra: 364:x=26
suy ra: x= 14 (T/M)
B. 92.4-27=x+350/x+315
suy ra: 341=x/x+ 350/x +315
suy ra: 26 =1+350/x
suy ra: 25=350/x
suy ra: 350:25=x
suy ra: 14=x (T/M)
Vậy a. x=14
b. x=14
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Xem thêm câu trả lời
tim x\(\in\)N, biet
a)697:\(\frac{15.x+364}{x}\)=17
b)92.4-27=\(\frac{x+350}{x}\)+315
khong can lam nua dau minh biet lam roi
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32x - 1 - 23 = 19
\(697:\frac{15.x+364}{x}=17\)
\(92.4-27=\frac{x+350}{x}+315\)
Nhớ ghi cách làm ra nha
a,697:[(15.x+364):x]=17
b,92.4-27=(x+350):x+317
a,697:[(15.x+364):x]=17
=>(15x+364):x=679:17=41
=>\(\frac{15x}{x}+\frac{364}{x}=41\)
=>\(15+\frac{364}{x}=41\)
=>\(\frac{364}{x}=41-15=26\)
=>\(x=\frac{364}{26}=14\)
b,92.4-27=(x+350):x+317
=>\(341=\left(x+350\right):x+317\)
=>\(\left(x+350\right):x=341-317=24\)
=>\(\frac{x}{x}+\frac{350}{x}=24\)
=>\(1+\frac{350}{x}=24\)
=>\(\frac{350}{x}=23\) => \(x=350:23=\frac{350}{23}\)
tìm x
a , x-4867=(175.2050.70):25+23
b , 697:15x + 364/x = 17
c , 92.4-27=x+350 / x+315
a) x - 4867 = 2050.70. (175: 25) + 23
x - 4867 = 2050.70.7 + 23 = 1004 500 => x = 1 004 500 + 4867 = 1 009 367
b) => (697 / 15) : x + 364 : x = 17 => \(\left(\frac{697}{15}+364\right):x=17\)
=> \(\frac{6157}{15}:x=17\) => x = \(\frac{6157}{15}:17=\frac{6157}{255}\)
c) => \(341=\frac{x+350}{x+315}\) => 341.(x+315) = x + 350 => 341x + 341.315 = x + 350
=> 341x - x = 350 - 341.315 => 340x = -107 065 => x = -107 065 : 340 =....
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mik chỉ biết làm phần b thôi thông cảm
đáp án phần B là 17
Good luck !
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697:(15x+364):x=17
92.4-27=(x+350):x+315
720:(41-(2x-51)=23.5
(x+1)+(x+2)+(x+3)+...+(x+100)=5750
Tìm x:
697:(15x+364):x=17
=> 15+360:x = 697:17=41
=> 360:x=41-15=26
=> x=360:26=180/13
92.4-27=(x+350):x+315
=> 1+350:x+315=341
=> 350:x = 341 -316=25
-> x=350:25=14
720:(41-(2x-51)=23.5
=> 41-(2x-51)= 720 :40=18
=> 2x=41-18+51=74
=> x=74:2=37
(x+1)+(x+2)+(x+3)+...+(x+100)=5750
=>(x+x+...+x) +(1+2+3+..+99+100)=5750
=> 100.x +(100+1).100:2= 5750
=>100.x= 5750-5050=700
=> x=700:100=7
( L-i-k-e )
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697 : (15x + 364) : x = 17
=> 15 + 360 : x = 697 : 17 = 41
=> 360 : x = 41 - 15 = 26
=> x = 360 : 26 = 180/13
92.4 - 27 = (x + 350) : x + 315
=> 1 + 350 : x + 315 = 341
=> 350 : x = 341 - 316 = 25
-> x = 350: 25 = 14
720 : (41 - (2 x - 51) = 23.5
=> 41 - (2 x -51) = 720 : 40 = 18
=> 2x = 41 - 18 + 51 = 74
=> x = 74 : 2 = 37
(x + 1) + (x + 2) + (x + 3) +...+ (x + 100) = 5750
=>(x + x +...+ x) +(1 + 2 + 3 +...+ 99 + 100) = 5750
=> 100.x + (100 + 1).100 : 2 = 5750
=>100.x = 5750 - 5050 = 700
=> x = 700 : 100 = 7
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a)697:15x+364=17
b)92.4-27=x+350+315/x
c)720:[41-(2x-5)x]=23.5
trình bày ra nhé
tìm x
a, 697 : 15 . x + 364 / x =17
b, 92 . 4 - 27 = x + 350 / x + 315