Question

x:y=3
z:x=6
x+y+z=90
Care sunt numerele?

Answer 1

X÷Y=3=>X=3Y
X÷Z=6=>X=6Z
3Y=6Z | ÷3
=>Y=2Z
X=3Y=>X=3×2Z=>X=6Z
inlocuim in X+Y+Z=90
6Z+2Z+Z=90
9Z=90=>Z=90÷9=>Z=10
X=6Z=>X=6×10=>X=60
Y=2Z=>Z=2×10=>Y=20
verificare( 1)
60+20+10=90
verificare(2)
X÷Y=3
60÷20=3
X÷Z=6
60÷10=6
SPER CA TE-AM AJUTAT!!!