document.write( "Question 668697: x+3y=11
\n" ); document.write( "3-y+2z=1
\n" ); document.write( "-2x=-4 \n" ); document.write( "

Algebra.Com's Answer #415819 by amazingrace333(11) $\"\"$ $\"About$

You can put this solution on YOUR website!
Start where you only have one variable, in this case, \"x\".
\n" ); document.write( "-2x = -4, solve: x = -4/-2, so x=2
\n" ); document.write( "therefore, x+3y=11 becomes 2+3y=11. Solve: 3y=11-2, 3y = 9, therefore y=9/3 or 3
\n" ); document.write( "3-y+2z=1 becomes 3-3+2z=1. Using order of operations, 3-3 becomes 0 leaving 2z=1
\n" ); document.write( "solve for z by dividing both sides by 2, therefore z=1/2
\n" ); document.write( "Check your answers:
\n" ); document.write( "-2*2 = -4
\n" ); document.write( "2+3(3)=11
\n" ); document.write( "and finally
\n" ); document.write( "3-3+2(1/2)=3-3+1=0+1=1
\n" ); document.write( "So your answers are:
\n" ); document.write( "x=2, y=3 and z=1/2
\n" ); document.write( " \n" ); document.write( "

\n" );