Question

adunand acelasi nr x la fiecare dintre nr 4, 10,si 14 se obtin trei sume care adunate dau 82 . determinati nr x

Answer 1

4+x=s
10+x=s2
14+x=s3

s+s2+s3=82<=>
4+x+10+x+14+x=82<=>
28+3x=82<=>
3x=54
x=18