document.write( "Question 124423: How do you solve for 3/4 - 3m/4m+6 = 8? \r
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Algebra.Com's Answer #91276 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
How do you solve for 3/4 - 3m/4m+6 = 8?
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\n" ); document.write( "Assume the problem is:
\n" ); document.write( "\"3%2F4\" - \"%283m%29%2F%28%284m%2B6%29%29\" = 8
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\n" ); document.write( "We can see the common denominator is 4(4m+6); multiply thru by that:
\n" ); document.write( "4(4m+6)*\"3%2F4\" - 4(4m+6)*\"%283m%29%2F%28%284m%2B6%29%29\" = 4(4m+6)*8
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\n" ); document.write( "Cancel out the denominators and you have:
\n" ); document.write( "3(4m+6) - 4(3m) = 32(4m+6)
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\n" ); document.write( "Multiply what is inside the brackets:
\n" ); document.write( "12m + 18 - 12m = 128m + 192
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\n" ); document.write( "Combine the \"m&m's\" on the left and the numbers on the right
\n" ); document.write( "12m - 12m - 128m = 192 - 18
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\n" ); document.write( "-128m = +174
\n" ); document.write( "m = \"174%2F%28-128%29\" = \"-87%2F64\"; reduced the fraction
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\n" ); document.write( "This first thing one thinks when you get an answer like -87/64, is where did I go wrong?
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\n" ); document.write( "Well maybe that is the right answer. Take the time to substitute this for m in the original equation
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\n" ); document.write( "First the numerator; 3m: 3*\"-87%2F64%29\" = \"-261%2F64\"
\n" ); document.write( "Then the denominator; 4*\"-87%2F74\" = \"-348%2F64\" + 6 = \"-348%2F64+%2B+394%2F64\" = +\"36%2F64\"
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\n" ); document.write( "When dividing fractions invert the dividing fraction and multiply so we have:
\n" ); document.write( "\"%28-261%2F64%29+%2A+%2864%2F36%29\" = \"-261%2F36\"; Canceled 64
\n" ); document.write( "the decimal equiv of \"-261%2F36\" = -7.25 and decimal of \"3%2F4\" = .75
\n" ); document.write( "so we have:
\n" ); document.write( ".75 - (-7.25) = (minus a minus is a plus)
\n" ); document.write( ".75 + 7.25 = +8!!!, we are right, that is the solution
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\n" ); document.write( "Did all this make sense to you, (perhaps lessen the struggle). Any questions?
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