lezeira
lezeira
18-12-2013
Mathematics
contestada
4a + 3 - 9 = -7 + 2 + a
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vivindalka
vivindalka
19-12-2013
4a + 3 - 9 = -7 + 2 + a
4a - 6 = -5 + a
4a - a = -5 + 6
3a = 1 / : 3
a = 1/3
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tomek1172
tomek1172
20-12-2013
[tex]4a + 3 - 9 = -7 + 2 + a\\ 4a-6=-5+a\\ 4a-a=-5+6\\ 3a=1\ /:3\\ a=\frac13[/tex]
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