Anajianu12ask
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aflati x:
a.xsupra3=15 supra 12 b. x+3 supra x+1=12 supra 10
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Răspuns :

Nistor07ask

Răspuns:

a) x/3=15/12

==> x=3×15/12=15/4

x=3,75

b) x+3/x+1=12/10

10(x+3)=12(x+1)

10x+30=12x+12

10x-12x=12-30

-2x= -16 |•(-1)

2x=16

==> x=16/2

x=8

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