2a-3b-4c+5d=4
-a-5b+2c-10d=-29
a+4b-3c-d=16
-a+b+5c-2d=-6
gauss eliminationm
simplify:9c squared+8m squared+6c+6c squared+3m squared+2c
3(y+3y)
=12
increase 57 by 8 percent
21=7n
|(2z-3)/(2z+3)|=1
increase 54 by 14 percent
fully simplify:5+3k+8kn-8k+7n-3nk+6ksquared-10n
360%11
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