Question

Afla nr.a,b,c,d daca a+b+c+d=123,a mai mic decat b cu8,c=a+b
d mai mare decat a cu 7

Answer 1

b=a+8
c=a+b =a+a+8=2a+8
d=a+7
a+b+c+d=123
a+a+8+2a+8+a+7=123
5a=100
a=20
b=20+8=28
c=2*20+8=48
d=20+7=27