tim so nguyen x biet -8+/x/=-12
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tim cac so nguyen x,y,z biet :-6/12=x/8=-7/y=z/-18
Ta có :
\(\frac{-6}{12}=\frac{x}{8}=\frac{-7}{y}=\frac{z}{-18}=\frac{-1}{2}\)
\(\Rightarrow\hept{\begin{cases}\frac{x}{8}=\frac{-1}{2}\Rightarrow x=\left(-4\right)\\\frac{-7}{y}=\frac{-1}{2}\Rightarrow y=14\\\frac{z}{-18}=\frac{-1}{2}\Rightarrow z=9\end{cases}}\)
Vậy ...
tim so nguyen x biet:
a, 23-x=19-(-12)
b, x-7=(-2)-8
\(a,23-x=19-\left(-21\right)\)
\(23-x=19+21\)
\(23-x=40\)
\(x=23-40\)
\(x=-17\)
Vậy \(x\in\left\{-17\right\}\)
\(b,x-7=\left(-2\right)-8\)
\(x-7=\left(-2\right)+\left(-8\right)\)
\(x-7=-10\)
\(x=-10+7\)
\(x=-10-\left(-7\right)\)
\(x=-3\)
Vậy \(x\in\left\{-3\right\}\)
a)23-x=19-(-12)
=>23-x=31
x=23-31
x=-8
Vậy x=-8
b)x-7=(-2)-8
x-7=-10
x =(-10)+7
x =-3
Vậy x=-3
a,23-x=19-(-12)
23-x=31
x=23-31
x=-8
b,x-7=(-2)-8
x-7=-10
x =-10+7
x =-3
Nếu đúng k mình nha
tim x dua vao quan he uoc boi:tim so tu nhien x sao cho x-1 la uoc cua 12tim so tu nhien x sao cho 2x+1 la uoc cua 28tim so tu nhien x sao cho x+15 la boi cua x+3tim cac so nguyen x,y sao cho (x+1)(y-2)3tim so nguyen x sao cho(x+2).(y-1)2tim so nguyen to x vua la uoc cua 275 vua la uoc cua 180tim so nguyen to x,y biet x+y12 va UCLL (x:y)5tim so tu nhien x,y biet x+y32 va UCLL (x:y)8tim so tu nhien x biet x chia het cho10; xchia het cho12; x chia het cho15 va 100x150tim so x nho nhat khac 0b biet...
Đọc tiếp
tim x dua vao quan he uoc boi:
tim so tu nhien x sao cho x-1 la uoc cua 12
tim so tu nhien x sao cho 2x+1 la uoc cua 28
tim so tu nhien x sao cho x+15 la boi cua x+3
tim cac so nguyen x,y sao cho (x+1)(y-2)=3
tim so nguyen x sao cho(x+2).(y-1)=2
tim so nguyen to x vua la uoc cua 275 vua la uoc cua 180
tim so nguyen to x,y biet x+y=12 va UCLL (x:y)=5
tim so tu nhien x,y biet x+y=32 va UCLL (x:y)=8
tim so tu nhien x biet x chia het cho10; xchia het cho12; x chia het cho15 va 100<x<150
tim so x nho nhat khac 0b biet x chia het cho 24 va 30
40 chia het cho x . 56 chia het cho x va x>6
a)Tim so nguyen x va y biet :
5/x+y/4=1/8
b)Tim so nguyen x de A co gia tri la 1 so nguyen biet :
A=(căn x +1) /(căn x -3) (x lớn hơn hoặc bằng 0)
b: Để A là số nguyên thì \(\sqrt{x}+1⋮\sqrt{x}-3\)
\(\Leftrightarrow\sqrt{x}-3+4⋮\sqrt{x}-3\)
\(\Leftrightarrow\sqrt{x}-3\in\left\{1;-1;2;-2;4\right\}\)
hay \(x\in\left\{16;4;25;1;49\right\}\)
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tim so nguyen x biet x=12+43
x = 12 + 43
x = 55
Tick nha! Đặng Tiến Thành
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1 tim cac so nguyen x,y biet x/7=6/21 -5/y=20/28 1/2=x/12 x/8=-28/32 3/y=12/24 3/4=15/y 2 viet 3 phan so bang phan so -10/15
a, Tim so tu nhien x, y biet rang 4<9/x<12/y<18
b, Tim so nguyen x, y biet rang x/2 - 2/y = 1/2
Lam cach nao de ra duoc ket qua nhu vay ha ban?
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Tim so nguyen x biet :
-12 (x - 5 ) + 7(3 - x )
tim so nguyen x biet: (-12)^2.x=56+10.38.x
vay x la