document.write( "Question 73558This question is from textbook mcdougal littel algebra 1
\n" ); document.write( ": the problem is area of a trapezoid solve b1 a=1/2h(b1+b2) \n" ); document.write( "
Algebra.Com's Answer #59827 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
a = (1/2)h(b1+b2)
\n" ); document.write( "2a = h(b1+b2)
\n" ); document.write( "(2a/h) = b1 + b2
\n" ); document.write( "b1 = (2a/h) - b2
\n" ); document.write( "==============
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );