Question

(470+430): 3-х: 5=100

Answer 1

(470+430):3-х:5=100

900:3-х:5=100

300-х:5=100|*5

1500-x=500

-x=-1500+500

x=1000

Answer 2

(470 + 430) : 3-х : 5=100

((470 + 430) : (3 - х)) : 5=100

(900 : (3 - х)): 5 - 100 = 0

(900/(3 - х)) * 0,2 - 100 = 0

180/(3 - х) - 100 = 0

180 - 300 +100х = 0

100х = 300 - 180

100х = 120

х = 1,2

 

Ответ: 1,2.