tim x
135-(2-x)=(x-934)-16
tim x
135-(2-x)=(x-934)-16
135 - ( 2 - x ) = ( x - 934 ) - 16
\(\Leftrightarrow\) 135 - 2 + x = x - 934 - 16
\(\Leftrightarrow\) 135 - 2 + x = x - 950
\(\Leftrightarrow\) 0x = 950 - 135 + 2
\(\Leftrightarrow\) 0x = 717
\(\Leftrightarrow\) x \(\in\varnothing\)
Tim x
a) X x 15 + X x 13 = 560 x 45
( X + X x 2 ) : 34 = 504
360 : X - 126 : X = 6
58 x X - 934 = 6722
14968 - X x 5 = 4968
16/9x27/20x40/33x55/48x.......x135/128x160/153
Tính nhanh hộ mình nhé
Giải ra luôn nhé
58 x X - 934 = 6722
=
=
58 x \(x\) - 934 = 6722
58 x \(x\) = 6722 + 934
58 x \(x\) = 7656
\(x\) = 132
58 x x - 934 = 6722
58.x-934=6722
58.x =6722+934
58.x =7656
x =7656:58
x =132
Vậy x=132
58 x x =6722+934
58 x x= 7656
x=7656 : 58
x=132
Đúng thì k hộ mình
58 * x - 934 = 6722
58 * x = 6722 + 934
58 * x = 7656
x = 7656 / 58
x = 132
vậy số cần tìm là : 132
tim x
(x^2 + 16)^2 - (16+ 1)^2
\(\left(x^2+16\right)^2-\left(16+1\right)^2=0\)
\(\Rightarrow\left(x^2+16-16-1\right)\left(x^2+16+16+1\right)=0\)
\(\Rightarrow\left(x^2-1\right)\left(x^2+33\right)=0\)
\(\Rightarrow\left(x-1\right)\left(x+1\right)\left(x^2+33\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x-1=0\\x+1=0\\x^2+33=0\end{matrix}\right.\)
\(\Rightarrow\left[{}\begin{matrix}x=1\\x=-1\\x^2=-33\left(loai\right)\end{matrix}\right.\)
58 x y - 934=6722
58 . y - 934=6722
58 . y=6722+934
58 . y=7656
y=7656:58
y=132
476 x 934 - 696 phần 933 x 475 + 238
=433580 phan 443316
27.(-16)+(-16).74+16
15+(-12)-(-18)-24-(-6)
2/tim x
4x-15= -75-x
3/tim x thuoc z sao cho 12 chia het cho (x-3)
cac bn giup mk nhe
Bài 1 bạn tự là nhé dễ lắm :))
Bài 2 :
Ta có :
\(4x-15=-75-x\)
\(\Leftrightarrow\)\(4x+x=-75+15\)
\(\Leftrightarrow\)\(5x=-60\)
\(\Leftrightarrow\)\(x=\frac{-60}{5}\)
\(\Leftrightarrow\)\(x=-12\)
Bài 3 :
Ta có :
\(12⋮\left(x-3\right)\)\(\Rightarrow\)\(\left(x-3\right)\inƯ\left(12\right)\)
Mà \(Ư\left(12\right)=\left\{1;-1;2;-2;3;-3;4;-4;6;-6;12;-12\right\}\)
Suy ra : ( lập bảng )
\(x-3\) | \(1\) | \(-1\) | \(2\) | \(-2\) | \(3\) | \(-3\) | \(4\) | \(-4\) | \(6\) | \(-6\) | \(12\) | \(-12\) |
\(x\) | \(4\) | \(2\) | \(5\) | \(1\) | \(6\) | \(0\) | \(7\) | \(-1\) | \(9\) | \(-3\) | \(15\) | \(-9\) |
Vậy \(x\in\left\{4;2;5;1;6;0;7;-1;9;-3;15;-9\right\}\)
Chúc bạn học tốt