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Rezolvati ecuatiile:
a) 1.3(8)x=2.5
b)1.0(6)x=1.6


Răspuns :

b)
(6/9)*x=1,6
2x/3=1,6
 2x=1,6*3=4,8
x=4,8:2=2,4

a)
1.3(8)=(138-13)/90=125/90=25/18

25x/18=25/10
x/18=1/10
x/9=1/5
5x=9
x=9:5
 x=1,8
a)38-3/90×x=25/10
35/90×x=25/10
35x×10=90×25
350x=2250
X=2250/350
X=45/7
b)6-0/90×X=16/10
6X/90=16/10
6X×10=16×90
60X=1440
X=1440/60
X=24