document.write( "Question 414128: What is the solution of the system? Solve the system by elimination\r
\n" ); document.write( "\n" ); document.write( ".3x-.2y=4
\n" ); document.write( ".5x+.5y=-15/19 \n" ); document.write( "

Algebra.Com's Answer #290465 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
(1) $\".3x+-+.2y+=+4\"$
\n" ); document.write( "(2) $\".5x+%2B+.5y+=+-15%2F19\"$
\n" ); document.write( "Multiply both sides of (1) by $\"10\"$
\n" ); document.write( "Multiply both sides of (2) by $\"6\"$
\n" ); document.write( "(1) $\"3x+-+2y+=+44\"$
\n" ); document.write( "(2) $\"3x+%2B+3y+=+-90%2F19\"$
\n" ); document.write( "Subtract (2) from (1)
\n" ); document.write( "(1) $\"3x+-+2y+=+44\"$
\n" ); document.write( "(2) $\"-3x+-+3y+=+90%2F19\"$
\n" ); document.write( " $\"-5y+=+836%2F19+%2B+90%2F19\"$
\n" ); document.write( " $\"-5y+=+926%2F19\"$
\n" ); document.write( " $\"y+=+-+926%2F95\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"3x+-+2%2A%28-926%2F95%29+=+44\"$
\n" ); document.write( "(1) $\"3x+%2B+1852%2F95+=+44\"$
\n" ); document.write( "(1) $\"3x+=+4180%2F95+-+1852%2F95\"$
\n" ); document.write( "(1) $\"3x+=+2328%2F95\"$
\n" ); document.write( " $\"x+=+776%2F95\"$
\n" ); document.write( "check:
\n" ); document.write( "(2) $\".5%2A%28776%2F95%29+%2B+.5%28-926%2F95%29+=+-15%2F19\"$
\n" ); document.write( "(2) $\"388%2F95+-+463%2F95+=+-75%2F95\"$
\n" ); document.write( "(2) $\"-75%2F95+=+-75%2F95\"$
\n" ); document.write( "OK\r
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