Question

(10^10-10^9):(10^9-10^8) nu stiu cum sa il rezolv

Answer 1

$(10^{10} - 10^{9}\big) : \big(10^9 - 10^8\big) = \Big(10^9\cdot(10-1)\Big):\Big(10^8\cdot(10-1)\Big) = \\ \\ =\big(10^9\cdot9\nig):\big(10^8\cdot9\big) =(10^9:10^8)\cdot (9:9) = 10\cdot 1 = 10$

Answer 2

(10^10-10^9)/(10^9-10^8)=
Simplificăm 10^10 cu 10000000000
=(10000000000-10^9)/(10^9-10^8)=
Simplificăm 10^9 cu 1000000000
=(1000000000-1000000000)/(10000000000-10^8)=
Simplificăm 10000000000−1000000000 cu 900000000
=9000000000/1000000000-10^8=
Simplificăm 10^8 cu 100000000
=9000000000/1000000000-100000000=
Simplificăm 1000000000-100000000 cu 9000000000
=9000000000/900000000=
Simplificăm
=10