=> 2 + 3 + 5 + 7+ ... +99 + 49X = 2 + 2499 + 49X
= 2501 + 49 X = 7500
=> 49X = 7500 - 2501 = 4999
=>X = 4999 : X = \(\frac{4999}{49}\)
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Cho hạn trong 5' nx ai trả lời đc mk cho 3 k free
Tìm x biết
x + 3x + 5x + 7x + ... + 99x = 75 . 102
Tìm x, biết:
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
•мấү❖тɦíм❖¢ɦỉ❖εм❖bàĭ❖ηầү❖¢áĭ⁀ᶦᵈᵒᶫ
a)2x+4x+6x+8x+.......96x+98x+100
b) x+3x +5x+7x+..... 97x+99x
❖χ = мấу ạ ᴾᴿᴼシ
x.1x.2x.3x.4x.5x.6x.7x.8x.9x.10x.11x=5500
x=?
6x=3x+1-5x+6x-5x+4x-9x+7x
tìm xa) 7x - 5 16b) 156 -2x 82c) 10x + 65 125d) 8x + 2x 25.2e) 15 + 5x 40f) 5x + 2x 6 -5g) 5x + x 150 : 2 + 3h) 6x + 3x 5 : 5 + 3i) 5x + 3x 3 : 3 . 4 + 12j) 4x + 2x 68 - 2 :2k) 5x + x 39 - 3 : 3l) 7x - x 5 : 5 + 3.2 - 7m) 7x -2 x 6 : 6 + 44 : 11n) 0 : x 0 o) 3x 9p) 4x 64q) 2x 16r) 9x - 1 9s) x4 16t) 2x : 2 1ai nhanh mk tick cho !!!!!!!
Đọc tiếp
tìm x
a) 7x - 5 = 16
b) 156 -2x = 82
c) 10x + 65 = 125
d) 8x + 2x = 25.2
e) 15 + 5x = 40
f) 5x + 2x = 6 -5
g) 5x + x = 150 : 2 + 3
h) 6x + 3x = 5 : 5 + 3
i) 5x + 3x = 3 : 3 . 4 + 12
j) 4x + 2x = 68 - 2 :2
k) 5x + x = 39 - 3 : 3
l) 7x - x = 5 : 5 + 3.2 - 7
m) 7x -2 x = 6 : 6 + 44 : 11
n) 0 : x = 0
o) 3x = 9
p) 4x = 64
q) 2x = 16
r) 9x - 1 = 9
s) x4 = 16
t) 2x : 2 = 1
ai nhanh mk tick cho !!!!!!!
Tìm x:
x + 9x + 7x + 5x =8844