document.write( "Question 1071961: What is the common number should be added to the ratio 1:2 to get7:5? \n" ); document.write( "

Algebra.Com's Answer #686858 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "Answer. The number is -4.5.\r
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document.write( "Let \"x\" be the number.\r\n" );
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document.write( "Then you have this equation  = .\r\n" );
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document.write( "Or, after cross-multiplying, 5(1+x) = 7*(2+x).\r\n" );
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document.write( "Simplify and solve it, and you will get x = -4.5.\r\n" );
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