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determinati cifra x stiind ca 1,3 (×)=25/18

Răspuns :

AnelisseBrainly
1,3x=25/18;
1,3=13/10;
13/10x=25/18;
=>x=25/18:13/10;
x=25/18•10/13;
x=250/234;
x≈1,06.
Vilmaristul
(13x-13)90=25/18
c.m.m.mc este 90
13x-13=25*5
13x=125+13
13x=138
x=8

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