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2014-09-07T21:35:17+03:00
16x-3(x+1)=5x
16x-3x-3=5x
16x-3x-3-5x=0
8x-3=0
8x=3
x=
 \frac{3}{8}
numar rational
1 5 1
2014-09-07T21:35:55+03:00
16x-3x-3=5x
13x-3=5x
-3=5x-13x
-3=-8xinmultit cu -1
8x=3
x=3/8 nr rational
1 4 1