document.write( "Question 238676: If 6b + 20 = a, and 4b + 30 = a, then b = \n" ); document.write( "

Algebra.Com's Answer #175368 by stanbon(75887) $\"\"$ $\"About$

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If
\n" ); document.write( "6b + 20 = a
\n" ); document.write( "4b + 30 = a
\n" ); document.write( "--------
\n" ); document.write( "Substitute to solve for \"b\":
\n" ); document.write( "6b+20 = 5b+30
\n" ); document.write( "Subtract 5b from both sides to get:
\n" ); document.write( "b + 20 = 30
\n" ); document.write( "Subtract 20 from both sides to get:
\n" ); document.write( "b = 10
\n" ); document.write( "==================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "

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