Răspuns:
14) 3841
16) 30.900
19)53723, 53724, 53725, 53726, 53727, 53727, 53728
Explicație pas cu pas:
11) coloana 1: a-b 384-178325=205999
a+b 384324+178325=562649
coloana 2: 298744-b=11324
298744-11324=b
287420=b
a+b 298744+287420=886164
coloana 3: a-524128=123344
a=123344+524128
a=647472
a+b 647472+324123=1171595
coloana 4: 289324+b=574124
b=574124-289324
b=284850
a-b 289324-284850=4474
16)deci 67.243 + 123.321 + a = b
b - 12.873 = 184000+24582
b-12873=208582
b=208582+12873 de unde b rezulta 221455
acum vine 190555+a=221455
a=221455-190555
a=30900
19) aici 36438+17285=53723
36439+17285=53724
36440+17285=53725
36441+17285=53726
36442+17285=53727
36443+17285=53728
14) a+8543=12384
a=12384-8543
a=3841
