Question

stiind ca:x+y=2015 six+y+z=5102,calculeaza: z-(x+y)=? 10 000-(x+y+z)-u=0 u=?

Answer 1

z+y=2015
x+y+z=5102

z-(x+y)=?
10000-(x+y+z)-u=0
u=?

•z-(x+y)=?
z-2015=?
z=5102-2015
z=3087

•u=?
10000-(x+y+z)-u=0
10000-5102-u=0
4898-u=0
u=4898