document.write( "Question 203459: 2(a – 4) + 4 = 5(9 - a) \n" ); document.write( "

Algebra.Com's Answer #153490 by checkley77(12844) $\"\"$ $\"About$

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2(a – 4) + 4 = 5(9 - a)
\n" ); document.write( "2a-8+4=45-5a
\n" ); document.write( "2a+5a=45+8-4
\n" ); document.write( "7a=49
\n" ); document.write( "a=49/7
\n" ); document.write( "a=7 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "2(7-4)+4=5(9-7)
\n" ); document.write( "2*3+4=5*2
\n" ); document.write( "6+4=10
\n" ); document.write( "10=10 \n" ); document.write( "

\n" );