document.write( "Question 1210543: USE THE SUBSTITUTION METHOD TO SOLVE a-2b=a, 2a+3b=4 \n" ); document.write( "

Algebra.Com's Answer #853559 by ikleyn(53558) $\"\"$ $\"About$

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\n" ); document.write( "USE THE SUBSTITUTION METHOD TO SOLVE a-2b=a, 2a+3b=4
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document.write( "Your starting equations are\r\n" );
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document.write( "     a - 2b = a,    (1)\r\n" );
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document.write( "    2a + 3b = 4.    (2)\r\n" );
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document.write( "In equation (1), cancel the identical terms 'a' in both sides.\r\n" );
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document.write( "You will get  -2b = 0,  which tells you that  b = 0.\r\n" );
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document.write( "Substitute b= 0 into equation (2)\r\n" );
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document.write( "    2a + 3*0 = 4,\r\n" );
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document.write( "    2a       = 4\r\n" );
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document.write( "     a       = 4/2 = 2.\r\n" );
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document.write( "ANSWER.  a = 2, b = 0.\r\n" );
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document.write( "You may check it on your own that (a,b) = (2,0) satisfies the given equations.\r\n" );
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\n" ); document.write( "\n" ); document.write( "At this point, the problem is solved completely.
\n" ); document.write( "We found the unique solution to the given system of equations.\r
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