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4a + 3 - 9 = -7 + 2 + a 4a - 6 = -5 + a 4a - a = -5 + 6 3a = 1 / : 3 a = 1/3
[latex]4a + 3 - 9 = -7 + 2 + a\\ 4a-6=-5+a\\ 4a-a=-5+6\\ 3a=1\ /:3\\ a=\frac13[/latex]
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4a + 3 - 9 = -7 + 2 + a 4a - 6 = -5 + a 4a - a = -5 + 6 3a = 1 / : 3 a = 1/3
[latex]4a + 3 - 9 = -7 + 2 + a\\ 4a-6=-5+a\\ 4a-a=-5+6\\ 3a=1\ /:3\\ a=\frac13[/latex]