\(\left|x+3\right|+2\left|6+2x\right|+2016=4016\)

\(\left|x+3\right|+2\left|6+2x\right|=4016-2016\)

\(\left|x+3\right|+2\times2\left|3+x\right|=2000\)

\(1\left|x+3\right|+4\left|x+3\right|=2000\)

\(\left|x+3\right|\left(1+4\right)=2000\)

\(5\left|x+3\right|=2000\)

\(\left|x+3\right|=2000:5\)

\(\left|x+3\right|=400\)

Vậy x=-403 hoặc 397

tổng trên =6097392

tk mk nha

thanks

câu 1. tìm x nguyên để \(\frac{-35}{6}\)<x<\(\frac{-18}{5}\)

<=> -4,375<x<-3,6

mà x\(\in\)Z nên x={-4}

câu 2. A=\(\frac{2015}{2016}\)+\(\frac{2016}{2017}\)

B=\(\frac{2015+2016}{2016+2017}\)=\(\frac{2015}{2016+2017}\)+\(\frac{2016}{2016+2017}\)

Vì \(\frac{2015}{2016+2017}\)<\(\frac{2015}{2016}\); \(\frac{2016}{2016+2017}\)<\(\frac{2016}{2017}\)

Vậy B<A

cau3:

\(\frac{1}{3}\)+\(\frac{1}{6}\)+\(\frac{1}{10}\)+.....+\(\frac{2}{x\left(x+1\right)}\)=\(\frac{2007}{2009}\)

2.(\(\frac{1}{6}\)+\(\frac{1}{12}\)+\(\frac{1}{20}\)+.....+\(\frac{1}{x\left(x+1\right)}\))=\(\frac{2007}{2009}\)

2.(\(\frac{1}{2.3}\)+\(\frac{1}{3.4}\)+\(\frac{1}{4.5}\)+.....+\(\frac{1}{x\left(x+1\right)}\))=\(\frac{2007}{2009}\)

2.(\(\frac{1}{2}\)-\(\frac{1}{3}\)+\(\frac{1}{3}\)-\(\frac{1}{4}\)+\(\frac{1}{4}\)-\(\frac{1}{5}\)+.....+\(\frac{1}{x}\)-\(\frac{1}{x+1}\))=\(\frac{2007}{2009}\)

2.(\(\frac{1}{2}\)-\(\frac{1}{x+1}\))=\(\frac{2007}{2009}\)

\(\frac{1}{2}\)-\(\frac{1}{x+1}\)=\(\frac{2007}{4018}\)

\(\frac{1}{x+1}\)=\(\frac{1}{2}\)-\(\frac{2007}{4018}\)

\(\frac{1}{x+1}\)=\(\frac{1}{2009}\)

x+1=2009

x=2009-1

x=2008

\(2016\times105-2016\times4-2016\)

\(=2016\times\left(105-4-1\right)\)

\(=2016\times100\)

\(=201600\)

\(x\times24+x\times6=240\)

   \(x\times\left(24+6\right)=240\)

                 \(x\times30=240\)

                            \(x=240:30\)

                            \(x=8\)

\(x-167\times15=167\times185\)

        \(x-2505=30895\)

                        \(x=30895+2505\)

                        \(x=33400\)

\(173\times105+173\times96-173\)

\(=173\times\left(105+96-1\right)\)

\(=173\times200\)

\(=34600\)

1. 2016 x 105 - 2016 x 4 - 2016

= 211680 - 8064 - 2016

= 203616 - 2016

= 201600

2. X x 24 + X x 6 = 240

    X x (24 + 6) = 240

    X x 30 = 240

    X        = 240 : 30

    X        = 8

3. X - 167 x 15 = 167 x 185

    X - 2505 = 30895

    X           = 30895 - 2505

    X           = 28390

4. 173 x 105 + 173 x 96 - 173

= 18165 + 16608 - 173

= 34773 - 173

= 34600

tôi không biết

\(2016-3.\left(x-6\right)=1446\)

\(\Rightarrow3.\left(x-6\right)=2016-1446\)

\(\Rightarrow3.\left(x-6\right)=570\)

\(\Rightarrow x-6=570:3\)

\(\Rightarrow x-6=190\)

\(\Rightarrow x=190+6\)

\(\Rightarrow x=196\)

Vậy \(x=196\)

3 . (x-6)=2016-1446

3 . (x-6)=570

x-6=570 : 3

x-6=190

x=190+6

x=196

2016-3(x-6)=1446

3(x-6)=2016-1446

3(x-6)=570

x-6=570:3

x-6=190

   x=190+6

   x=196

vậy x=196

=2016x(6+5)

=2016x11

=22176

= 2016 x ( 6 + 5 )

= 2016 x     11

=  22176

=22176

duyet nha