document.write( "Question 70153: Can you please help me solve the problem...instructions...solve the system by substitution.\r
\n" ); document.write( "\n" ); document.write( "3x - 2y = -19
\n" ); document.write( " y = 2x + 12
\n" ); document.write( "

Algebra.Com's Answer #50027 by checkley75(3666)\"\" \"About 
You can put this solution on YOUR website!
y=2x+12 then we substitute (2x+12) for y in the other equation and solve for x
\n" ); document.write( "3x-2(2x+12)=-19
\n" ); document.write( "3x-4x-24=-19
\n" ); document.write( "-x=-19+24
\n" ); document.write( "-x=5
\n" ); document.write( "x=-5 answer now substitute (-5) for x & solve for y
\n" ); document.write( "y=2*-5=12
\n" ); document.write( "y=-10+12
\n" ); document.write( "y=2 answer
\n" ); document.write( "proof
\n" ); document.write( "3*-5-2*2=-19
\n" ); document.write( "-15-4=-19
\n" ); document.write( "-19=-19
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