document.write( "Question 230446: Simplify the following expression: \r
\n" ); document.write( "\n" ); document.write( "-2(5x+z)-2(-5z-5x)
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Algebra.Com's Answer #170633 by texttutoring(324)\"\" \"About 
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First expand the expression, by removing the brackets:
\n" ); document.write( "= -2(5x+z)-2(-5z-5x)
\n" ); document.write( "= -10x -2z + 10z +10x\r
\n" ); document.write( "\n" ); document.write( "Now collect the like terms (combine the x's with the x's and the z's with the z's):\r
\n" ); document.write( "\n" ); document.write( "= -10x+10x -2z+10z
\n" ); document.write( "= 0 + 8z
\n" ); document.write( "= 8z
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