document.write( "Question 455914: I have to solve a system of equations using substitution to eliminate one variable for y=2x and 3x+y=20. \n" ); document.write( "

Algebra.Com's Answer #312967 by solver91311(24713) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Your first equation guarantees that

and

are utterly identical. Replace

in the second equation with

, then solve for

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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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$\"The$

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