document.write( "Question 473147: im lost please help me with this system:\r
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Algebra.Com's Answer #324434 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "Taking it a 'step' st a time:
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document.write( "4a+7b=-39
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document.write( "8a-4c=-24
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document.write( "6b-4c=-46\r
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document.write( " 8a-4c=-24
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document.write( "-6b+4c=+46
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document.write( "8a-6b = 22   a = (22-6b)/8  = (11-3b)/4\r
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document.write( "4a+7b=-39
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document.write( "4(11-3b)/4 +7b=-39
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document.write( "11-3b +7b=-39
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document.write( "        4b = -50
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document.write( "         b = -12.5  and a = 97/8 = 12.125   a = (22-6(-12.5))/8\r
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document.write( " CHECKING our Answer***
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document.write( "4a+7b=-39
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document.write( "4*12.125 - 87.5 = 48.5 -87.5 = 39 \n" );
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