Question

Calculeaza nr .x,ysiz,stiind ca:x+y+z=759
x+y=654
y+z=328
La o petrecere s au folosit pt decorare 354 de baloane albe,cu 244 mai putine baloane rosii si baloane albastre cu 102 mai putine decat cele rosii.
Cate baloane s au folosit in total?stiind ca s au spart 225 de baloane ,afla cate au mai rămas.

Answer 1

Z=759-654=105
X=759-328=431
Y=759-(105+431)=759-536=223
110 baloane rosii
8 baloane albastre
354+110+8-225=472-225=247 baloane ramase

Answer 2

759-654=105 nr.z
759-328=431 nr.x
759-105-431=223 nr.y
431+223+105=758

354-244=110 baloana rosii
110-102=8 albastre
354+110+8=472 baloane in total
472-225=247 au mai ramas