tim x
x+36=36-x
Tim X
a,X - 20/11 x 13 - 20/13 x 15 - 20/15 x 17 -...-20/53 x 55 = 3/11
b,1/21 + 1/28 +1/36 + ... +2/Xx(x + 1) = 2/9
Ta có : A=20/11×13 + 20/13×15 +20/15×17+...+20/53×55
A = 10 ×( 2/11×13+2/13×15+...12/53×55)
A = 10 ×(1/11-1/13+1/13-1/15+1/15-1/17+...+1/53-1/55)
A = 10 × (1/11-1/55)
A =10 × 4/55
A = 8/11
tim x biet:
x - 36 : 18 = 12
(x - 36) : 18 = 12
1) \(x-36:18=12\)
\(\Rightarrow x-2=12\)
\(\Rightarrow x=14\)
2) \(\left(x-36\right):18=12\)
\(\Rightarrow x-36=216\)
\(\Rightarrow x=252\)
tìm X
X x 36=540 X : 53 = 60
2040 : X = 85
\(\left[{}\begin{matrix}x.36=540\Rightarrow x=540:36\Rightarrow x=15\\2040:x=85\Rightarrow x=2040:85\Rightarrow x=24\\x:53=60\Rightarrow x=60.53\Rightarrow x=3180\end{matrix}\right.\)
a: \(\Leftrightarrow x=15\)
b: x=24
X x 36= 540 X : 53 = 60
X=540 : 36 X= 60 x 53
X= 15. X= 3180
2040 : X = 85
X = 2040 : 85
X=24
Tim x :
a) 5x - 36 : 18 = 13
b) ( 5x - 36 ) : 18 = 13
A) \(y=5X-\frac{18.2}{18}=135X-2=13x=3\)
B)\(y=\frac{5x-36}{18}=13\frac{5x}{18}-2=13\frac{5x}{18}=15\frac{x}{18}=3x=54\)
a, 5x-36:18=13
5x-2=13
x=5-2
x=3
b,(5x-36):18=13
5x-36=13x18
5x-36=234
5x=234+36
5x=270
x=270:5
x=54
cho mình nhé:):):):):):):)@@@@@@@#######
Tim x: 12+x*6=36
x=4 nha em
×÷×+12×6=36
×+12×6=36
×+12=36-6
×+12=30
×=30-12
×=18
Nhớ ✔ cho mình nha
tim x : 1+3+5+...+x = 36
tim x biet x -36 \ 18=12
ai nhanh và đúng nhất thì mình mới tít nha
tim x : x2 + 36=12x
tim so nguyen x biet: x + 2x = -36
\(x+2x=3x=-36\)
\(\Rightarrow x=\frac{-36}{3}=-12\)
Ủng hộ nhé
cái thằng nguyễn bùi hoàng văn kia ngu đến mức đấy sao