\(\left[{}\begin{matrix}x.36=540\Rightarrow x=540:36\Rightarrow x=15\\2040:x=85\Rightarrow x=2040:85\Rightarrow x=24\\x:53=60\Rightarrow x=60.53\Rightarrow x=3180\end{matrix}\right.\)

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
 

=> cái vế  trong ngoặc là 0.

rồi bạn làm tiếp nha

\(\dfrac{-12}{25}.\left(\dfrac{3}{4}-x+\dfrac{6}{-11}-\dfrac{5}{6}\right)=0\)

\(\dfrac{3}{4}-x+\dfrac{-6}{11}-\dfrac{5}{6}=0\)

\(\dfrac{3}{4}-x+\dfrac{-91}{66}=0\)

\(\dfrac{3}{4}-x=0-\left(\dfrac{-91}{66}\right)\)

\(\dfrac{3}{4}-x=\dfrac{91}{66}\)

\(x=\dfrac{-83}{132}\)

a: Ta có: \(-\dfrac{12}{25}\cdot\left(\dfrac{3}{4}-x+\dfrac{6}{-11}-\dfrac{5}{6}\right)=0\)

\(\Leftrightarrow x+\dfrac{83}{132}=0\)

hay \(x=-\dfrac{83}{132}\)

\(\dfrac{x}{12}=x+\dfrac{15}{16}\)

\(\Leftrightarrow\dfrac{x}{12}=\dfrac{16x+15}{16}\)

\(\Rightarrow12\left(16x+15\right)=16x\)

\(\Leftrightarrow192x+180=16x\)

\(\Leftrightarrow176x=-180\)

\(\Leftrightarrow x=-\dfrac{45}{44}\)

Vậy \(x=-\dfrac{45}{44}\)

\(\dfrac{x}{12}=\dfrac{x+15}{16}\)

\(\Rightarrow12\left(x+15\right)=16x\)

\(\Leftrightarrow12x+180=16x\)

\(\Leftrightarrow4x=180\)

\(\Leftrightarrow x=45\)

Vậy x = 45

\(\dfrac{x}{12}=\dfrac{x+15}{16}\)

\(16x=12\left(x+15\right)\)

\(16x=12x+180\)

\(4x=180\)

\(x=45\)

\(x-\dfrac{3}{11}=\dfrac{9}{12}\Rightarrow x=\dfrac{9}{12}+\dfrac{3}{11}=\dfrac{45}{44}\)

x-3/11=9/12

x=9/12+3/11

x=45/44

x-3/11=9/12

x=9/12+3/11

x=45/44

a. (x80x - 801).12 = 0

⇔ x80 x (- 801) = 0

⇔ -64080x = 801

⇔ x = 0

(mấy câu tiếp mik ko hiểu lắm bn viết lại rõ đề rồi mik giải tiếp)

Bạn cần viết đề bài bằng công thức toán để được hỗ trợ tốt hơn.

a, 12+18+24+30+36+42

=6.2+6.3+6.4+6.5+6.6+6.7

=6.(2+3+4+5+6+7)

=6.27

=162

b, mm+pp+xx+yy

=11.m+11.p+11.x+11.y

=11.(m+p+x+y)

c, 1212+2121+4242+2424

=12.101+21.101+42.101+24.101

=(12+21+42+24).101

=99.101

=9999

\(\dfrac{x}{10}=\dfrac{-3}{5}\\ \Rightarrow x=\dfrac{10.\left(-3\right)}{5}=-6\\ ------------\\ x+\dfrac{5}{12}=\dfrac{-2}{3}\\ x=\dfrac{-2}{3}-\dfrac{5}{12}\\ x=\dfrac{-8}{12}-\dfrac{5}{12}\\ x=\dfrac{-13}{12}\)

`x`=`-6`

`x` = `-13/12`

x/10=-3/5

x/10=-3.2/5.2

x/10=-6/10

x=-6

x+5/12=-2/3

x=-2/3-5/12

x=8/12-5/12

x=3/12

x=1/4

a. (80x - 801) . 12 = 0

<=> 80x - 801 = 0

<=> 80x = 801

<=> x = \(\dfrac{801}{80}\)

(Mấy câu tiếp mik ko hiểu đề, bn viết lại để dễ hiểu hơn nhé)

c: Ta có: \(\overline{xxx}=16\)

\(\Leftrightarrow100x+10x+1=16\)

\(\Leftrightarrow101x=16\)

hay \(x=\dfrac{16}{101}\)