X/36 = 76/57

=> X = 36x76/57

=> X = 48

x ko tồn tại

48/36

\(x=\dfrac{76}{57}\times36=48\)

\(\dfrac{x}{36}=\dfrac{76}{57}\)

\(\dfrac{x}{36}=\dfrac{4}{3}\)

\(\dfrac{x}{36}=\dfrac{48}{36}\)

\(\Rightarrow x=48\)

x=48

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q, ed,x

\(\dfrac{x}{36}=\dfrac{76}{57}\)

 => \(\dfrac{x}{36}=\dfrac{4}{3}\)

=> \(\dfrac{x}{36}=\dfrac{48}{36}\)

=> x = 48

`x/36=76/57`

`57xx x=76xx36`

`57 xx x=2736`

`x=2736:57`

`x=48`

\(a,C1=744+186\\ =930\\ C2=93\times\left(8+2\right)\\ =93\times10=930\\ b,C1:=324+576\\ =900\\ C2=9\times\left(36+64\right)\\ =9\times100\\ =900\\ c,C1=456-399\\ =57\\ C2=57\times\left(8-7\right)\\ =57\)

\(a)\)\(93\times8+93\times2\)

\(=98\times\left(8+2\right)\)

\(=98\times10\)

\(=980\)

\(b)36\times9+64\times9\)

\(=9\times\left(36+64\right)\)

\(=9\times100\)

\(=900\)

\(c)57\times8+57\times7\)

\(=57\times\left(8-7\right)\)

\(=57\times1\)

\(=57\)

\(8888+76\times36-38\times72=8888+76\times36-38\times2\times36=8888+76\times36-76\times36=8888+0=8888\)

8888

a) (x + 73) - 26 = 76

x + 73 = 76 + 26 = 102

x = 102 - 73 = 29

b) 6x - 36 = 144 : 2

6x - 36 = 72

6x = 72+36 = 108

nhầm viết thêm nè 

 x = 108 : 6 = 18

c) 3^2 . (x+4) - 5^2 = 5.2^2

3^2.(x+4)-5^2=20

3^2.(x+4)=20+5^2=45

x+4=45:3^2=5

x=5-4=1