Calcule x dans chacun des cas suivants : <br /><br /> [tex] \frac{x}{5,5} =0,6[/tex]<br /> [tex] \frac{13}{x} =0,25 [/tex]<br /> [tex]0,8= \frac{36}{x} [/tex]

Question

Grade: Education Subject: mathematiques

Calcule x dans chacun des cas suivants :

[tex] \frac{x}{5,5} =0,6[/tex]
[tex] \frac{13}{x} =0,25 [/tex]
[tex]0,8= \frac{36}{x} [/tex]

Asked by: USER7149

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USER3155

Best Answer

(209)

a) (x/5.5)*5.5=0.6*5.5
=> x=33

b) (13/x)*x=0.25*x
=> 13=0.25*x
=> 13/0.25=0.25*x/0.25
=> 52=x

c) 0.8=36/x
0.8*x=36
x=36/0.8
x=45

Answered on 27 Agustus 2025

USER1489

(107)

5,5X0,6=3,3
3,3:5,5=,6

13:0,25=52
13:52=0,25

36:0,8=45
36:45=0,8

Answered on 27 Agustus 2025