document.write( "Question 1199477: Question : simplify : x-[x-(y-z)]-z \r \n" );
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document.write( "My work: \n" );
document.write( " -1(y-z) I took the - as -1 and multiplied it by (y-z) \n" );
document.write( " x(-y+z) expanded and multiplied by x \n" );
document.write( " x--xy+xz-z added the x- and -z (outside of brackets) \n" );
document.write( " x+xy+xz-z final answer (which is wrong)\r \n" );
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document.write( "actual answer :y-2z\r \n" );
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document.write( "how am I supposed to work it out then ? \n" );
document.write( "thank you for your attention. \n" );
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