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what is a for 4( 1/5a- 1/2 ) + 1/2a =11?
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Amber_Malaine

by Amber_Malaine at November 25, 2009

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(4/5)a - 2 + (1/2)a = 11(8/10)a + (5/10)a = 13       (lcm of 5 and 2 is 10)(13/10)a = 13a = 13 * (10/13)    a = 10                                (13s cancel)
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Alison037 Alison037 November 26, 2009

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4/5a-2a+1/2a = 11[(8a-20a+5a)/10]10 =11(10)8a-20a+5a = 110-7a = 110(-7a)/(-7) = 110/(-7)a = -110/7
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The_Engineer The_Engineer November 26, 2009

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Sorry, i made a mistake in the distribution.This is the right solution4/5a-2+1/2a = 114/5a+1/2a = 1310[(8a+5a)/10] = 13(10)13a/13 = 130/13a = 10Again, this is the right solution.../
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The_Engineer The_Engineer November 26, 2009

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