\(96-\left(3,75:y\right)=94,5\)  \(ĐKXĐ:y\ne0\)

\(3,75:y=96-94,5\)

\(3,75:y=1,5\)

\(y=\frac{3,75}{1,5}\)

\(y=2,5\) ( TM ĐKXĐ: \(x\ne0\))

vậy \(y=2,5\)

Những câu khác làm tương tự

a, \(\left(x-21\times13\right):11=30\)

\(\Rightarrow x-273=30\times11=330\)

\(\Rightarrow x=330+273=603\)

b, \(\left(627-138\right):\left(x:2\right)=163\)

\(\Rightarrow489:\left(x:2\right)=163\)

\(\Rightarrow x:2=489:163=3\Rightarrow x=2\times3=6\)

a, ( x - 21 . 13 ) : 11 = 30

( x - 273 ) = 30 . 11

x - 273 = 330

x = 330 + 273

x = 603

Vậy x = 603

b, ( 627 - 138 ) : ( x : 2 ) = 163

489 : ( x : 2 ) = 163

x : 2 = 489 : 163

x : 2 = 3

x = 3 . 2

x = 6

Vậy x = 6

a) 96- (y : 3,75) = 94,5               

y:3,75 = 96 - 94,5 

y: 3,75 = 1,5

y = 1,5 x 3,75

y = 5,625

a) 96- (y : 3,75) = 94,5

y:3,75=96-94,5

y:3,75=1,5

y=1,5 . 3,75

y=5,625=45/8

96-( y : 3,75 ) = 94,5

       y : 3,75 = 96-94,5

      y : 3,75 = 1,5 

      y = 1,5 x 3,75

     y = 5,25

96 : ( 3,75 : x ) = 94,5

3,75 : x = 96 : 94,5

3,75 : x = \(\frac{96}{94,5}\) 

x = 3,75 : \(\frac{96}{94,5}\)

x = \(\frac{354,375}{96}\)

\(\frac{1}{2}+\frac{1}{14}+\frac{1}{35}+\frac{1}{x}\left(3+x\right)=\frac{6}{13}\)

\(\Rightarrow\frac{1}{2}+\frac{1}{14}+\frac{1}{35}+\frac{3+x}{x}=\frac{6}{13}\)

\(\Rightarrow\frac{1}{2}+\frac{1}{14}+\frac{1}{35}+1+\frac{3}{x}=\frac{6}{13}\)

\(\Rightarrow\frac{3}{x}+\frac{8}{5}=\frac{6}{13}\)

\(\Rightarrow\frac{3}{x}=-\frac{74}{65}\)

\(\Rightarrow-74x=195\)

\(\Rightarrow x=\frac{-195}{74}\)

\(\frac{1}{2}+\frac{1}{14}+\frac{1}{35}+\frac{1}{x\left(3+x\right)}=\frac{6}{13}\)

\(\frac{3}{5}+\frac{1}{x\left(3+x\right)}=\frac{6}{13}\)

\(\frac{1}{x\left(3+x\right)}=-\frac{9}{65}\)

\(\Rightarrow-9x\left(3+x\right)=65\)

\(\Rightarrow-9x^2-27x-65=0\)

\(\Rightarrow9x^2-27x+65=0\)

Đề sai

a)A=(x-y)x+y(x-y)=(x-y)(x+y)

Thay x=87,y=13 ta có:(87-13)(87+13)=74×100=7400

b)B=x^2+2x+1-y²=(x+1)²-y²=(x⁺1-y)(x+1+y)

Thay x=94,5,y=4,5 ta có (94,5+1-4,5)(94,5+1+4,5)=91.100=9100

c)C=x^2+1/2x+1/16=(x+1/4)²

^{thay x=49,75 ta có (49,75+1/4)^2=50^2=2500}

          3, 16:(x. 0,4)= 7,9

=>                x. 0,4= 3,16:7,9= 0,4

=>                     x = 0,4 : 0,4 = 1

Vậy x= 1

ai ma biet hoc sinh tieu hoc 

96 - (3,75 : x) = 94,5

          3,75 : x = 96 - 94,5

          3,75 : x = 1,5

                    x = 3,75 : 1,5

                     x = 2,5

96-(3,75:X)=94,5

3,75;x=96-94,5

3,75;x=1,5

x=3,75;1,5

x=2,5

k mk ha

\(\left(x-21.13\right):11=30\)

\(\left(x-273\right)=30.11\)

\(x-273=330\)

\(x=330+273\)

\(x=603\)

vậy \(x=603\)

\(\left(627-138\right):\left(x:2\right)=163\)

\(489:\frac{x}{2}=163\)

\(\frac{x}{2}=489:163\)

\(\frac{x}{2}=3\)

\(\Rightarrow x=6\)

vậy \(x=6\)

học tốt Trần Bích Ngọc

x = 603 . 

x = 6 . 

\(\left(x-21\times13\right)\div11=30\)

\(\left(x-273\right)\div11=30\)

\(x-273=30\times11\)

\(x-273=330\)

\(x=330+273\)

\(x=603\)