document.write( "Question 181355: Use Substitution to solve each system of equations. state whether it has no solution or infinitely many solutions. y=2x+3 y=4x-1 \n" ); document.write( "
Algebra.Com's Answer #135990 by ankor@dixie-net.com(22740)\"\" \"About 
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y=2x+3 y=4x-1
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\n" ); document.write( "Substitute 4x - 1 for y in the 1st equation
\n" ); document.write( "4x - 1 = 2x + 3
\n" ); document.write( "4x - 2x = 3 + 1
\n" ); document.write( "2x = 4
\n" ); document.write( "x = \"4%2F2\"
\n" ); document.write( "x = 2
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\n" ); document.write( "Find y using the 1st equation
\n" ); document.write( " y = 2x + 3
\n" ); document.write( " y = 2(2) + 3
\n" ); document.write( "y = 7
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\n" ); document.write( "It has one solution: 2,7
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\n" ); document.write( "Check solutions in the 2nd equation
\n" ); document.write( " y = 4x - 1
\n" ); document.write( " 7 = 4(2) -1 \n" ); document.write( "
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