Question

Tìm x:

x x 2 + x x 3 + x x 4 + x = 2130

Answer 1

x * 2 + x * 3 + x * 4 + x = 2130

x * (2 + 3 + 4 + 1) = 2130

x * 10 = 2130

x = 2130 : 10 = 213

Answer 2

2x + 3x + 4x + x = 2130

10x = 2130

x = 2130 ÷ 10

x = 213

Answer 3

=>10x=2130

hay x=213

Answer 4

X x 2 + X x 3 +X x 4 + x =2130

 

`X xx ( 2 + 3 + 4 + 1 ) = 2130`

`X xx 10 = 2130`

`X = 2130 : 10`

`X = 213`

Answer 5

2x + 3x + 4x + x = 2130

10x = 2130

x = 2130 : 10

x = 213