Question 28736
12-N/5=21-N-29 05 12-N/5=-N-8 OR (60-N)/5=-N-8 OR 60-N=-5N-40 OR

100=-4N OR 100/-4=N OR -25=N

PROOF 12-(-25)/5=21-(-25)-29 OR 12+25/5=21+25-29 OR 12+5=46-29 OR 17=17.

21=1-(4A+2) OR 21=1-4A-2 OR 21-1+2=-4A OR 22=-4A OR 22/-4=A OR -5.5=A

PROOF 21=1-((4(-5.5))+2) OR 21=1-((-22)+2) OR 21=1-(-22+2) OR 21=1-(-20) OR

21=1+20 OR 21=21.