Question

afla termenu necunoscut
a)15+a=27
55-a=44
a-18=20
34+a=88
72-a=21
a-25=23
a+16=87
47-a=43
a-83= 6
a+23=65
86-a=53
a-33= 0​

Answer 1

Răspuns:

a)a=27-15=12

a=55-44=11

a=20+18=38

a=88-34=54

a=72-21=51

a=25+23=48

a=87-16=71

a=47-43=4

a=83+6=89

a=65-23=42

a=86-53=33

a=33+0=33