Question

Afla nr a,b,c,d,e.stiind ca:
a+b+c+d+e=80;a
a mai mic decat b cu 10
c=a+b
d mai mare ca a cu 6
e =2d

Answer 1

b=a+10
c=a+b
d=a+6
e=2d inlocuim in suma
a+a+10+a+a+10+a+6+2a+12=80
7a+38=80
a=42/7
a=6
b=a+10=6+10
b=16
c=a+b=6+16
c=22
d=a+6=6+6
d=12
e=2d=2x12
e=24