document.write( "Question 1013404: Find the following difference. (-28x³y³z + 34x³y³ - 4z) - (52x³y³z + 22x³y³ - 41z) \n" ); document.write( "
Algebra.Com's Answer #629709 by Edwin McCravy(20055)\"\" \"About 
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document.write( "(-28x³y³z + 34x³y³ - 4z) - (52x³y³z + 22x³y³ - 41z)\r\n" );
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document.write( "Remove the parentheses.  The first parentheses is understood to be \r\n" );
document.write( "preceded by a + sign so we leave all the signs inside just as they \r\n" );
document.write( "are when we remove the parentheses.\r\n" );
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document.write( "But the second parentheses is preceded by a - sign so we change all \r\n" );
document.write( "the signs inside when we remove the parentheses.  So we have this:\r\n" );
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document.write( "-28x³y³z + 34x³y³ - 4z - 52x³y³z - 22x³y³ + 41z\r\n" );
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document.write( "Now we rearrange the terms so that like terms are together\r\n" );
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document.write( "-28x³y³z - 52x³y³z + 34x³y³ - 22x³y³ - 4z + 41z\r\n" );
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document.write( "Combine the coefficients of x³y³z:  -28-52 = -80\r\n" );
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document.write( "Combine the coefficients of x³y³:  +34-22 = 12\r\n" );
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document.write( "Combine the coefficients of z:  -4+41 = 37\r\n" );
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document.write( "-80x³y³z + 12x³y³ + 37z\r\n" );
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document.write( "Edwin
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