document.write( "Question 886198: The area of a trapezoid is given by the formula A=1/2
\n" ); document.write( "h(B + b). Solved for b, this formula becomes b =
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #535756 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+A+=+%281%2F2%29%2Ah%2A%28+B+%2B+b+%29+\"$
\n" ); document.write( "Multiply both sides by $\"+2+\"$
\n" ); document.write( " $\"+2A+=+h%2A%28+B+%2B+b+%29+\"$
\n" ); document.write( "Divide both sides by $\"+h+\"$
\n" ); document.write( " $\"+%28+2A+%29+%2F+h+=+B+%2B+b+\"$
\n" ); document.write( "Subtract $\"+B+\"$ from both sides
\n" ); document.write( " $\"+%28+2A+%29+%2F+h+-+B+=+b+\"$
\n" ); document.write( "And now you can write it in reverse order:
\n" ); document.write( " $\"+b+=+%28+2A+%29+%2F+h+-+B+\"$
\n" ); document.write( "------------------------
\n" ); document.write( "You can check it
\n" ); document.write( "Suppose
\n" ); document.write( " $\"+h+=+4+\"$
\n" ); document.write( " $\"+B+=+3+\"$
\n" ); document.write( " $\"+A+=+8+\"$
\n" ); document.write( "--------------
\n" ); document.write( " $\"+A+=+%281%2F2%29%2Ah%2A%28+B+%2B+b+%29+\"$
\n" ); document.write( " $\"+8+=+%281%2F2%29%2A4%2A%28+3+%2B+b+%29+\"$
\n" ); document.write( " $\"+2%2A8+=+5%2A%28+3+%2B+b+%29+\"$
\n" ); document.write( " $\"+3+%2B+b+=+%28+2%2A8+%29%2F4+\"$
\n" ); document.write( " $\"+b+=+16%2F4+-+3+\"$
\n" ); document.write( " $\"+b+=+1+\"$
\n" ); document.write( "-----------------------
\n" ); document.write( "And now:
\n" ); document.write( " $\"+b+=+%28+2A+%29+%2F+h+-+B+\"$
\n" ); document.write( " $\"+b+=+%28+2%2A8+%29+%2F+4+-+3+\"$
\n" ); document.write( " $\"+b+=+16%2F4+-+3+\"$
\n" ); document.write( " $\"+b+=+4+-+3+\"$
\n" ); document.write( " $\"+b+=+1+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );