document.write( "Question 91723: the question is X+y = 13 & 22x+36y=356 university of phoenix elementary and intermediate algebra \n" ); document.write( "
Algebra.Com's Answer #66608 by tutorcecilia(2152)\"\" \"About 
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The problem is asking you to solve the system of equations or do these two equations have a common point (x, y)?
\n" ); document.write( "There are several methods you can use to solve systems of equations:
\n" ); document.write( "1. substitution
\n" ); document.write( "2. elimination
\n" ); document.write( "3. matrix
\n" ); document.write( "I do not know which method you are to use, but here is the \"substitution\" method:\r
\n" ); document.write( "\n" ); document.write( "x+y=13
\n" ); document.write( "x=-y+13 [Solve for the x-term]
\n" ); document.write( "22x+3y=356 [substitute the first equation back into the second equation]
\n" ); document.write( "22(-y+13)+36y=356
\n" ); document.write( "-22y+286+36y=356 [solve for the y-term]
\n" ); document.write( "14y+286=356
\n" ); document.write( "14y=356-286
\n" ); document.write( "14y=70
\n" ); document.write( "y=5 [plug (y=5) back into either of the original equation and solve for (x)]
\n" ); document.write( ".
\n" ); document.write( "x+y=13
\n" ); document.write( "x+5=13
\n" ); document.write( "x=13-5
\n" ); document.write( "x=8
\n" ); document.write( "checking: 8+5=13 [checks out]\r
\n" ); document.write( "\n" ); document.write( ".
\n" ); document.write( "So, the common point or solution to this system of equations is:
\n" ); document.write( "(8, 5)\r
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