Algebra.Com's Answer #843503 by ikleyn(52803)![\"\"](\"/images/stars/stars-13.gif\")  
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document.write( "3/8 of the buttons are green. There were 20 more blue buttons than green.
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document.write( "The remaining 84 buttons were pink. How many buttons were blue
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document.write( " It can be easily solved using only ONE unknown and one equation.
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document.write( " See my solution below.\r
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document.write( "Let x be the total number of buttons.\r\n" );
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document.write( "Then  buttons are green;  buttons are blue \r\n" );
document.write( "and remaining 84 buttons are pink. \r\n" );
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document.write( "So, we can write this equation for total\r\n" );
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document.write( " + + 84 = x.\r\n" );
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document.write( "At this point, the setup is complete.\r\n" );
document.write( "To solve equation, multiply both sides by 8\r\n" );
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document.write( " 3x + 3x + 160 + 672 = 8x\r\n" );
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document.write( " 160 + 672 = 8x - 3x - 3x \r\n" );
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document.write( " 832 = 2x\r\n" );
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document.write( " x = 832/2 = 416.\r\n" );
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document.write( "The number of blue buttons was  + 20 = 176. ANSWER\r\n" );
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document.write( "Solved, using only one unknown.\r
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