1*x+9*x+7*x+5*x =8844
(1+9+7+5)*x=8844
22*x=8844
x=8844/22
x=402
Ta có :
\(x+9x+7x+5x=22x=8844\Rightarrow x=402\)
x+9x+7x+5x=8844
=1x+9x+7x+5x=8844
=(1+9+7+5)x=8844
=22x=8844
x=8844:22
x=402
1*x+9*x+7*x+5*x =8844
(1+9+7+5)*x=8844
22*x=8844
x=8844/22
x=402
Ta có :
\(x+9x+7x+5x=22x=8844\Rightarrow x=402\)
x+9x+7x+5x=8844
=1x+9x+7x+5x=8844
=(1+9+7+5)x=8844
=22x=8844
x=8844:22
x=402
Tìm x biết 2+ 3x + 5x + 7x + 9x + ... + 99x = 7500
Tìm x, biết:
x+ 9x + 7x + 5x= 2244
6x=3x+1-5x+6x-5x+4x-9x+7x
x+9x+7x+5x=2244
x + 9x + 7x + 5x = 2244
Tìm số tự nhiên x biết:
a) 25 + 7x = 144
b) 33 - 12x = 9
c) 128 - 3(x + 4) = 23
d) 71 + (726 - 3x).5 = 2246
e) 720 : [41 - (2x + 5)] = 40
f) (10 - 4x) + 120 : 8 = 16 + 1
g) x + 9x + 7x + 5x = 2244
h) (x + 1) + (x + 2) + (x + 3) +...+ (x + 100) = 5750
i) 1 + 2 + 3 +...+ x = 500500
j) 51 + 52 + 53 +...+ x = 18825
x+2x+3x+3x+4x+5x+6x+7x+8x+9x+10x=-165.tim x
x.1x.2x.3x.4x.5x.6x.7x.8x.9x.10x.11x=5500
x=?
a) 4(x+3)-(2x-12)=x-(-11+4)
b) -(4x-13)+(5x-4)= -3-(-15+7)
c) (5x-3)-(-2x+4)=6x-12
d) (15x+20)-(9x-3)=5x-(-12)
e) (7x+14)+(3x-8)= -(-9x+3)
giúp mình nha.................