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13-4*(2*x:5-2)=5
ajutor!!!!


Răspuns :

13-4*(2*x:5-2)=5
4*(2*x:5-2)=13-5=8
(2*x:5-2)=8:4
2*x:5-2=2
2*x:5=2+2=4
2*x=4*5=20
x=20:2
x=10
13 - 4 * ( 2x : 5 - 2 ) = 5
4 *( 2x : 5 - 2 ) = 8
2x : 5 - 2 = 2
2x : 5 = 4
2x = 20
x = 10