Question

2016 : [ 25 - (3x +2) ] =3^ .7

 

Answer 1

mux 2 nha moi ng 

 

 

Answer 2

2016 : \(\left[25-\left(3x+2\right)\right]=3^7\)

<=> 25 - (3x + 2) = 2016 : 2187

<=> 25 - 3x - 2 = \(\dfrac{224}{243}\)

<=> -3x = \(\dfrac{224}{243}\) + 2 - 25

<=> -3x = \(\dfrac{-5365}{243}\)

<=> x = 7,359396433 \(\approx\) 7,4

Answer 3

2016 : \(\left[25-\left(3x+2\right)\right]=3^2\)

<=> 25 - (3x + 2) = 2016 : 9

<=> 25 - 3x - 2 = 224

<=> -3x = 224 - 25 + 2

<=> -3x = 201

<=> x = \(\dfrac{201}{-3}=-67\)

Answer 4

em chịu thua, em đầu hàng

Answer 5

gì

Answer 6

đã nói đầu hàng rồi còn ko tha

Answer 7

\(2016:\left[25-\left(3x+2\right)\right]=3^2\cdot7\)

\(\Leftrightarrow25-\left(3x+2\right)=32\)

\(\Leftrightarrow3x+2=-7\)

hay x=-3