document.write( "Question 531889: if a+b = 35
\n" ); document.write( "and 2a + 4b = 94
\n" ); document.write( "how do you find a and b?
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Algebra.Com's Answer #350784 by boilpoil(127)\"\" \"About 
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a+b=35\r
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\n" ); document.write( "\n" ); document.write( "2a+4b=94 ---You need to make b the subject to insert the equation into 'b'
\n" ); document.write( "4b=94-2a
\n" ); document.write( "b=(94-2a)/4\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "a+(94-2a)/4=35
\n" ); document.write( "4a+94-2a=140
\n" ); document.write( "2a=46
\n" ); document.write( "a=23\r
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\n" ); document.write( "\n" ); document.write( "b=(94-2(23))/4 ---Substitute a=23 into 'a'
\n" ); document.write( "b=(94-46)/4
\n" ); document.write( "b=48/4
\n" ); document.write( "b=12\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "And 23+12=35
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