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  • Utilizator Brainly
2014-10-21T22:54:46+03:00

a+a+1=45
2a+1=45
2a=44
a=22

R: 22 , 23 .
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a+a+1+a+2=45
3a+3=45
3a=42
a=14

a+1=14+1=15
a+2=14+2=16
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a+a+1+a+2+a+3+a+4=45
5a+10=45
5a=35
a=7

R: 7,8,9,10,11
a+a+1+a+2+a+3+a+4+a+5=45
6a+15=45
6a=30
a=5

R: 5,6,7,8,9,10 .
Variantele corecte sunt  " a , c , d , e " .