document.write( "Question 432649: How do you solve this proportions ?\r
\n" ); document.write( "\n" ); document.write( "a+1 over 2 = a - 1 over 9\r
\n" ); document.write( "\n" ); document.write( "3 over b = b over 9\r
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\n" ); document.write( "\n" ); document.write( "5 over x = x - 1 over 3 \r
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Algebra.Com's Answer #299960 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( "solving Proportions by cross multiplying
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document.write( "      \"%28a%2B1%29%2F+2+=+%28a+-+1%29%2F9\"   |CROSS MULTIPLYING
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document.write( "      9(a+1) = 2(a-1) 
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document.write( "         7a = -11
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document.write( "          a = -11/7\r
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document.write( "     \"3%2Fb+=+b+%2F+9+\"
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document.write( "      b^2 = 27
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document.write( "      b = ± sqrt(27)\r
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document.write( "  \"5+%2Fx+=+%28x+-+1%29%2F+3\"
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document.write( "    x(x-1) = 15
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document.write( "   x^2 -x - 15 = 0 
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document.write( "\"x+=+%281+%2B-+sqrt%2861+%29%29%2F%282%29+\" \n" );
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