We have : x + 2x + 4x+ 8x + 16x +32x = 12345

<=> x(2 + 4 + 8 + 16 + 32) = 12345

<=> 62x = 1234 

=> x = ////////////////////

We have : 5x²y + 4xy - 9x²y - 4xy 

= 5x²y - 9x²y + 4xy - 4xy

= -4x²y 

Good 

Can not believe someone z

You see you to you to your coppy

Immerse yourself in the equality of the score

No 2017 yes 2007 

No Kurosaki Akatsu I do not do not copy your articles do not shamelessly z look back . You Is answering that wrong

Kurosaki Akatsu and Love the Name of Jiang good

Kurosaki Akatsu good . 

We have \(\dfrac{a}{b}=\dfrac{b}{c}=\dfrac{c}{a}=\dfrac{a+b+c}{b+c+a}=1\)

Then : \(\dfrac{a}{b}=1\Rightarrow a=b\)

            \(\dfrac{b}{c}=1\Rightarrow b=c\)

            \(\dfrac{c}{a}=1\Rightarrow c=a\)

Deduced : a = b = c 

Which top post for a + b + c = 2007 => 3a = 2007 => a = 2007 : 3 = 669

Dress a = b = c = 669

There is something to ask good because neck one question or

Kurosaki Akatsu thanks so much

Kurosaki Akatsu The solution is good

The total velocity of the two vehicles is: 

                       (40 + 45) = 85 (km/giờ)

The long AB distance is: 

                        85 x 3 = 255 (km)

                            Answer : 255 km 

Uneykers Greet the whole question well : 

We have : H - G = (5x²y - 7xy + 3xy² - 5) - (5xy + xy² - 6x²y + 9)

                           = 5x²y - 7xy + 3xy² - 5 - 5xy - xy² + 6x²y - 9

                           = 5x²y + 6x²y - 7xy - 5xy + 3xy² - xy² - 5 - 9

                 H - G = 11x²y - 12xy + 2xy² - 14  

Look at the chart you see .

Mary eat the least orange then Mary can eat one orange

Jack ate the most orange then Jack can eat 6 orange 

Jack eat more Mary than the orange is:

             6 - 1 = 5 (orange)

                 Answer : 5 orange

We have -G - M = -(4xy - 3x²y + 3xy² - 7) - (3x²y + 2xy - 2xy² + 4)

                          = -4xy + 3x²y - 3xy² + 7 - 3x²y - 2xy + 2xy² - 4

                          = -4xy -2xy + 3x²y - 3x²y - 3xy² + 2xy² + 7 - 4

                          = -6xy - xy² + 3 

It is very special when -M - G = -G - M. The math problem is interesting and interesting

We have : -M - G = -(3x²y + 2xy - 2xy² + 4) - (4xy - 3x²y + 3xy² - 7)

                             = -3x²y - 2xy + 2xy² - 4 - 4xy + 3x²y - 3xy² + 7

                             = -3x²y + 3x²y - 2xy - 4xy + 2xy² - 3xy² - 4 + 7

                             = -6xy - xy² + 3

Peace of mind 100%

Math You Unfair Because i answer that before
 

We have : A = 1.2 + 2.3 + 3.4 + ...... + 1999.2001

=> 3A = 1.2.3 - 1.2.3 + 2.3.4 - 2.3.4 + ...... + 1999.2001.2002

=> 3A = 1999.2001.2002

=> A = 1999.2001.2002/3

=> A = 2 666 666 000 

The sum of the sums of the above sum is : 

                 (104 - 2) : 3 + 1 = 35 (skull)

The sum above is : 

                  (104 + 2) x 35 : 2 = 1855 

The sum of the sums of the above sum is:

                  (1999 - 1) : 2 + 1 = 1000 (skull)

The sum above is: 

                   (1999 + 1) x 1000 : 2 = 1 000 000