document.write( "Question 1162304: using subsition to solve the system below, what should your first step be
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Algebra.Com's Answer #786092 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "Based on the second equation, REPLACE \"y\" in the first equation by (2x+2).\r\n" );
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document.write( "You will get then\r\n" );
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document.write( "    5x - 4*(2x+2) = -2.\r\n" );
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document.write( "Simplify and find x\r\n" );
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document.write( "    5x - 8x - 8 = -2\r\n" );
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document.write( "    -3x = -2 + 8\r\n" );
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document.write( "     -3x   = 6\r\n" );
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document.write( "     x =  = -2.\r\n" );
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document.write( "Then  y = 2x + 2 = 2*(-2) + 2 = -4 + 2 = -2.\r\n" );
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document.write( "ANSWER.  x= -2;  y= -2.\r\n" );
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