mux 2 nha moi ng 

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

Ta có: \(2016:\left[25-\left(3x+2\right)\right]=32\cdot7\)

\(\Leftrightarrow25-\left(3x+2\right)=9\)

\(\Leftrightarrow3x+2=16\)

\(\Leftrightarrow3x=14\)

hay \(x=\dfrac{14}{3}\)

2016 : [25 - (3x+2)]=32.7

25 - (3x+2)= 2016 : 224

25 - (3x+2)= 9

3x+2 = 16

3x=14

x=\(\dfrac{14}{3}\)

Ta có: \(-2016-\left|-3x-2016\right|=3x\)

\(\Rightarrow\left|-3x-2016\right|=-2016-3x\)

\(\Rightarrow\left|-3x-2016\right|=-\left(-3x-2016\right)\)

\(\Rightarrow-3x-2016\le0\)

\(\Rightarrow-3x\le2016\Rightarrow x\ge-672\)

Vậy \(x\ge-672.\)

a) x= - 15

b) x= - 2

c) x= -12 

d) x= -2 

Câu a:

(3x + 2016) - (2x - 15) = 2016

3x + 2016 - 2x + 15 =2016

3x -2x = 2016 - 2016 - 15

x = 0 - 15

x =- 15

Vậy x =- 15

Mọi người ơi giúp tui với !

Khó quá

Ai giúp tui , tui sẽ k cho 3 k 

 Và còn nhiều hơn nữa 

Thanks

a) 25  . 29 + 5^2 . 2^2 .15 + 11 . 25

=25 . 29 + 25 . 4 .15 + 11 . 25

=25 . 29 + 25 . 60 + 11 . 25

=25.(29 + 11 + 60)

=25 . 100

= 2500

b) 2016^0 + 1^2016 . (3^2 . 3 - 2^4 : 8)

= 1 + 1 .(9 . 3 - 16 :8)

= 1 + 1 .(27 - 2)

= 1+ 1.25

= 1+25

= 26