(5+x)/8 = 14/16 

5+x = 7 

x=2

(5+x)/8=14/16

ta co: (5+x)/8=7/8

suy ra: 5+x=7

               x=7-5

               x=2

\(\frac{\left(5+X\right)}{8}\)=\(\frac{14}{16}\)

\(\left(5+X\right)x16\)=\(14x8\)

\(5x16+Xx16=112\)

\(80+Xx16=112\)

\(Xx16=112-80\)

\(Xx16=32\)

\(X=32:16\)

\(X=2\)

a) \(5-\left|x\right|=1\)

\(\left|x\right|=4\)

\(\Rightarrow\orbr{\begin{cases}x=4\\x=-4\end{cases}}\)

vậy \(\orbr{\begin{cases}x=4\\x=-4\end{cases}}\)

b) \(10+\left|x-1\right|=14\)

\(\left|x-1\right|=4\)

\(\Rightarrow\orbr{\begin{cases}x-1=4\\x-1=-4\end{cases}}\Rightarrow\orbr{\begin{cases}x=5\\x=-3\end{cases}}\)

vậy \(\orbr{\begin{cases}x=5\\x=-3\end{cases}}\)

a) 5 - |x| = 1

=> |x| = 5 - 1

=> |x| = 4

=> x = 4 hoặc x = -4

Vậy x = 4 hoặc x = -4

b) 10 + |x - 1| = 14

=> |x - 1| = 14 - 10

=> |x - 1| = 4

TH1: x - 1 = 4

=> x = 4 + 1

=> x = 5

TH2: x - 1 = -4

=> x = -4 + 1

=> x = -3

Vậy x = 5 hoặc x = -3

\(5+\frac{x}{8}=\frac{14}{16}\)

         \(\frac{x}{8}=\frac{14}{16}-5\)

         \(\frac{x}{8}=-\frac{33}{6}\)

\(\Rightarrow6x=-33\times8\)

\(\Rightarrow6x=-264\)

\(\Rightarrow x=-44\)

Vậy \(x=-44\)

\(5+\frac{x}{8}=\frac{5}{1}+\frac{x}{8}=\frac{40}{8}+\frac{x}{8}\)\(=\frac{14}{16}=\frac{7}{8}\)

Vay \(\frac{x}{8}=\frac{7}{8}-\frac{40}{8}=\)...............tự làm tiếp

Kết bạn với mình nha :)

a)  2 x 49 = − 2 7 ⇒ 2 x 49 = − 4 49 ⇒ x = − 2

b)  x + 1 6 = − 1 2 ⇒ x + 1 6 = − 3 6 ⇒ x = − 4

1)<=>5|x-8|x=5x|x-8|

=>5x|x-8|=-1

=>x=\(4-\frac{9}{\sqrt{5}}\)

2)TH1:|x|-5=0

=>x=±5

TH2:x-3⁸=0

=>x=3⁸=6561

TH3:|x-7|=0

=>x=7

a)\(\left(9x-2^3\right):5=2\)

\(9x-8=2.5\)

\(9x-8=10\)

\(9x=10+8\)

\(9x=18\)

\(x=18:9\)

\(x=2\)

b)\(\left[3^4-\left(8^2+14\right):13\right].x=5^3+10^2\)

\(\left[81-\left(64+14\right):13\right].x=125+100\)

\(\left[81-78:13\right].x=225\)

\(\left[81-6\right].x=225\)

\(75x=225\)

\(x=225:75\)

\(x=3\)

5+x/8=14/16

=>10+2x/16=14/16

=>10+2x=14

=>2x=4

=>x=2

Vậy x=2

x=9 nha bạn

\(\frac{5+x}{8}=\frac{14}{16}\)

\(\Rightarrow\left(5+x\right)\)x16= \(14\)x\(8\)

=>80+16X=112

=>16X=32

=>X=2

2 nghiệm hả bn

Có cả y nữa kìa

\(x,y\in Z\Rightarrow\left\{{}\begin{matrix}2-x,y-4\in Z\\2-x,y-4\inƯ\left(8\right)\end{matrix}\right.\)

Ta có bảng:
 

\(Vậy\left(x,y\right)\in\left\{\left(1;12\right);\left(0;8\right);\left(-2;6\right);\left(-6;5\right);\left(3;-4\right);\left(4;0\right);\left(6;2\right);\left(10;3\right)\right\}\)