document.write( "Question 509075: Solve the equation for the variable.
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document.write( "1/5a-1/8=-2 Fraction 1 over 5 multiplied by a, subtracted by 1 over 8 = -2 \n" );
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Algebra.Com's Answer #341255 by Theo(13342)![]() ![]() You can put this solution on YOUR website! your equation is 1/(5a) - 1/8 = -2 \n" ); document.write( "add 1/8 to both sides of the equation to get: \n" ); document.write( "1/(5a) = -2 + 1/8 \n" ); document.write( "since -2 is equivalent to -16/8, this equation becomes: \n" ); document.write( "1/5a = -16/8 + 1/8 which becomes: \n" ); document.write( "1/5a = -15/8 \n" ); document.write( "multiply both sides of the equation by a and you get: \n" ); document.write( "(1/5) = a * (-15/8) \n" ); document.write( "multiply both sides of the equation by (-8/15) and you get: \n" ); document.write( "(1/5) * (-8/15) = a * (-15/8) * (-8/15) \n" ); document.write( "the (-15/8) and the (-8/15) on the right side of the equation will cancel out and you will get: \n" ); document.write( "(1/5) * (-8/15) = a \n" ); document.write( "simplify this to get: \n" ); document.write( "-8/75 = a\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "that should be your answer.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "replace a with (-8/75) in your original equation to confirm. \n" ); document.write( "original equation is: \n" ); document.write( "1/(5a) - 1/8 = -2 \n" ); document.write( "replace a with (-8/75) to get: \n" ); document.write( "1/(5*(-8/75)) - 1/8 = -2 \n" ); document.write( "add 1/8 to both sides of the equation to get: \n" ); document.write( "1/(5*(-8/75)) = -15/8 \n" ); document.write( "simplify the denominator of the left side of the equation to get: \n" ); document.write( "1/(-40/75) = -15/8 \n" ); document.write( "multiply both sides of the equation by (-40/75) to get: \n" ); document.write( "1 = (-40/75) * (-15/8) \n" ); document.write( "this is equivalent to: \n" ); document.write( "1 = (-40 * -15) / (75 * 8) \n" ); document.write( "simplify the right side of the equation to get: \n" ); document.write( "1 = 1 \n" ); document.write( "since the equation is true, the value for a that we derived above is good. \n" ); document.write( "that value for a is: \n" ); document.write( "a = (-8/75)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |