x + 9x + 7x + 5x = 2244

1x + 9x + 7x + 5x = 2244

x(1+9+7+5) = 2244

x.22 = 2244

=> x = 102

x + 9x + 7x + 5x = 2244

<=> 1x + 9x + 7x + 5x = 2244

x ( 1 + 9 + 7 + 5 ) = 2244

22x = 2244

x = 2244 : 22

x = 1122

x + 9x + 7x + 5x = 2244

<=> 22x = 2244

<=> x = 2244 : 22 

=> x = 102

66666666666666666666666666666666

1*x+9*x+7*x+5*x =8844

(1+9+7+5)*x=8844

22*x=8844

x=8844/22

x=402

x=402 nha k nha

=> 2 + 3 + 5  + 7+ ... +99 + 49X = 2 + 2499 + 49X

= 2501 + 49 X = 7500

=> 49X = 7500 - 2501 = 4999

=>X = 4999 : X = \(\frac{4999}{49}\)

X*(1+2+3+4+5+6+7+8+9+10)=-165

X*55=-165

X=-165/55=-3

111111111111111111111111111111111111111111111111111111111111111111111111111111111111111

(1x + 9x) + (2x + 8x) + (3x + 7x) + (4x + 6x) + 5x + 10x = -165

10x^6 + 5x = -165

= 65x (-165)

= -100

X = 500

NẾU ĐÚNG THÌ CHO MÌNH NHA

a)4.(x+3)-(2x-12)=x-(-11+4)

4x+12-2x+12=x+11-4

2x+24=x+7

2x-x=-24+7

x=-17

b)-(4x-13)+(5x-4)=-3-(-15+7)

-4x+13+5x-4=-3+15-7

(-4x+5x)+13-4=12-7

x+9=5

x=-4

c)(5x-3)-(-2x+4)=6x-12

5x-3+2x-4=6x-12

5x+2x-6x=3+4-12

x=-5

d)(15x+20)-(9x-3)=5x-(-12)

15x+20-9x+3=5x+12

15x-9x-5x=-20-3+12

x=-11

e,(7x+14)+(3x-8)=-(-9x+3)

7x+14+3x-8=9x-3

7x+3x-9x=-14+8-3

x=-9

xin lỗi mình mới học lớp 5

Ta có :

6x = 3x+1-5x+6x-5x+4x-9x+7x

=> 6x+1 = (3x+7x) - (5x+5x) + (6x+4x) - 9x

=> 6x+9x+1 = 10x - 10x + 10x

=> 15x+1 = 10x

=> 10x-15x = 1 

=> -5x = 1

=> x = 1 : (-5)

=> x = -1

Vậy x = -1