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afla numerele necunoscute a) 236+ x = 512. x+383= 525 b) a-156= 314 a- 312 = 289 c) 940-x=217.
483-x=295


Răspuns :

a) 236+x=512 => x=512-236=276
x+383=525 => x=525-383= 142
b) a-156=314 => a= 314+156 =470
a-312=289=> a= 289+312= 601
c) 940-x= 217=> x= 940-217= 723
483-x= 295=> x= 483-295= 188