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afla termenul necunoscut
3600:100-a:4=29
4200:10:a=1987
a-3600:100=439
48000:1000+a:5=57
a+11700:100x3=976
dau corenita


Răspuns :

36-a/4=29 36-29=a/4 7=a/4 a=4*7=28 420:a=1987 a=420/1987 a-36=439 a=475 48+a/5=57 A/5=9 A=45 A+117x3=976 A=976-351 A=625