document.write( "Question 1052089: Systems of equations in three variables HELP!!
\n" ); document.write( "a+b=3
\n" ); document.write( "-b+c=3
\n" ); document.write( "a+2c=10
\n" ); document.write( "

Algebra.Com's Answer #667509 by MathTherapy(10552)\"\" \"About 
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Systems of equations in three variables HELP!!
\n" ); document.write( "a+b=3
\n" ); document.write( "-b+c=3
\n" ); document.write( "a+2c=10
\n" ); document.write( "

\n" ); document.write( "a + b = 3 ------- eq (i)
\n" ); document.write( " - b + c = 3 ------- eq (ii)
\n" ); document.write( "a + 2c = 10 ------- eq (iii)
\n" ); document.write( "a + c = 6 ------- Adding eqs (ii) & (i) ------- eq (iv)
\n" ); document.write( "\"highlight_green%28c+=+4%29\" ------ Subtracting eq (iv) from eq (iii)\r
\n" ); document.write( "\n" ); document.write( "- b + 4 = 3 ------- Substituting 4 for c in eq (ii)
\n" ); document.write( "- b = 3 - 4
\n" ); document.write( "- b = - 1
\n" ); document.write( "b = \"%28-+1%29%2F%28-+1%29\", or \"highlight_green%28b+=+1%29\"\r
\n" ); document.write( "\n" ); document.write( "a + 1 = 3 ------- Substituting 1 fro b in eq (i)
\n" ); document.write( "a = 3 - 1, or \"highlight_green%28a+=+2%29\"
\n" ); document.write( "Again, you need to IGNORE JOGS/JOSG's solution, if it can be called that. \n" ); document.write( "
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