x : 2 = 100 + 50
x : 2 = 150
x = 150 x 2
x = 300
x : 2 = 100 + 50
x : 2 = 150
x = 150 x 2
x = 300
x : 2 = 150 x = 150 *2 x = 300 * la nhan
Tìm X
A. (X +1)+(X+2)+(X+3)+…+(X+ 100)=5750
B. X+(1+2+3+4+…+50)=2000
C. (X-1)+(X-2)+…+(X-100)=50
Tìm x: (x-1)+(x-2)+(x-3)+...+(x-100)=50
2/3.x+50/100+x=1/10
cau 2
50 < 2^x < 100
50< 7^x < 2500
giup minh 2 con ha
tính nhanh: 50 x ( 54 - 100) + 54 x ( 50 + 100 )
Tìm x: (x+1)+(x+2)+(x+3)+...+(x+99)+(x+100)=50
x + 25 x 4 = 50 x 50 x 100
Tìm x, biết:
( x-1) + (x-2) + .... + (x-100 ) = 50
B2: tìmX
A.13 x X+ 14 x X=50
B. ( X+2) +( X+4) +…+ (X+ 100)=3550
C.(1- X)+(2- X)+ (3- X)+…+ (100- X)=50
D. ( X+1)+(2x X+3)+(3 x X+5)+…+(50 x X +99)= 3775
K. 5 x X-(1+2+3+…+30)=135
M. X- 165
+ 546= 562
X
