x*y*z=40
x*y=8
=> 8*z=40 => z=40/8 => z=5
y*z=20 => y*5=20 => y=20/5 => y=4
=> x*4*5=40 => x*20=40 => x=40/20 => x=2
a*b*c=30
a*b=6
=> 6*c=30 => c=30/6 => c=5
b*c=10 => b*5=10 => b=10/5 => b=2
=> a*2*5=30 => a*10=30 => a=30/10 => a=3
Deci: x=2;y=4;z=5
a=3;b=3;c=5
Sper cā te-am ajutat!❤️