document.write( "Question 187987This question is from textbook Algebra 1
\n" ); document.write( ": Use substitution to solve each system of equations.
\n" ); document.write( "x=2y
\n" ); document.write( "4x+2y=15 \n" ); document.write( "

Algebra.Com's Answer #141003 by jojo14344(1513) $\"\"$ $\"About$

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\n" ); document.write( "Given: $\"system%28x=2y%28EQN1%29%2C4x%2B2y=15%28EQN2%29%29\"$
\n" ); document.write( "Subst. EQN 1 in EQN2:
\n" ); document.write( " $\"4%28highlight%282y%29%29%2B2y=15\"$
\n" ); document.write( " $\"8y%2B2y=15\"$ ----> $\"10y=15\"$ ---> $\"cross%2810%29y%2Fcross%2810%29=cross%2815%291.5%2Fcross%2810%29\"$
\n" ); document.write( " $\"red%28y=1.5%29\"$ , subst. in EQN 1:
\n" ); document.write( " $\"x=2%281.5%29=red%283%29\"$
\n" ); document.write( "These 2 lines intersect at point (3,1-1/2)
\n" ); document.write( "---> RED (EQN 1);; GREEN (EQN 2)
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo \n" ); document.write( "

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