document.write( "Question 974171: Without solving the equation prove that x=-2. Equation 3(x-1)+2=5-x
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Without solving the equation prove that x=-2. Equation 3(x-1)+2=5-x
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\n" ); document.write( "Sub -2 for x
\n" ); document.write( "3(-2-1) + 2 = 5 - (-2)
\n" ); document.write( "3*-3 + 2 = 7
\n" ); document.write( "-7 = 7
\n" ); document.write( "x <> -2
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\n" ); document.write( "3(x-1)+2=5-x
\n" ); document.write( "3x-3 + 2 = 5-x
\n" ); document.write( "3x-1 = 5-x
\n" ); document.write( "4x = 6
\n" ); document.write( "x = 3/2
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