Tìm x biết rằng
( x + 1) + ( x + 2) + (x + 3) + ... ( x + 100) = 5750
Tìm số tự nhiên x biết rằng ( x + 1 ) + ( x + 2 ) + ( x + 3 ) + .....+ ( x + 100 ) = 5750
( x + 1 ) + ( x + 2 ) + ( x + 3 ) + .....+ ( x + 100 ) = 5750
(100.x)+(1+2+3+.........+100)=5750
100.x+101.50=5750
100x+5050=5750
100.x=700
x=700:100
x=7
Tìm số tự nhiên x biết rằng
720:[41-(2x-5)]=23.5
(x+1)+(x+2)+(x+3)+…+(x+100)=5750
a: =>41-(2x-5)=720:40=18
=>2x-5=23
=>2x=28
=>x=14
b: =>100x+5050=5750
=>100x=700
=>x=7
a: =>41-(2x-5)=720:40=18
=>2x-5=23
=>2x=28
=>x=14
b: =>100x+5050=5750
=>100x=700
=>x=7
a) (x+1) +(x+2) +...+(x+100) = 5750
100.x + (1+2+...+100) =5750
100.x + (100.101):2 = 5750
100.x + 5050 = 5750
100x= 700
x= 7
Tìm x biết: (x+1)+(x+2)+(x+3)+...+(x+100)=5750
x+x+x+...x+ 1+2+3+...100 = 5750
100.x + 101.50 = 5750
100.x = 5757-5050
100.x = 700
x = 700: 100
x = 7
Tìm số tự nhiên x, biết rằng:
a, 720 : [41 - (2x - 5) ] = 2^3 . 5
b, (x +1) + (x +2) +...+(x +100) = 5750
Tìm x biết :(x+1)+(x+2)+(x+3)+...+(x+100)=5750
(x+1)+(x+2)+(x+3)+...+(x+100)=5750
x + 1 + x + 2 + x + 3 + .... + x + 100 = 5750
(x + x + x + ... + x) + (1 + 2 + 3 + ... + 100) = 5750
100x + 5050 = 5750
100x = 5750 - 5050 = 700
x = 700 : 100 = 7
(x+1)+(x+2)+(x+3)+...+(x+100)=5750
x + 1 + x + 2 + x + 3 + .... + x + 100 = 5750
(x + x + x + ... + x) + (1 + 2 + 3 + ... + 100) = 5750
100x + 5050 = 5750
100x = 5750 - 5050 = 700
x = 700 : 100 = 7
(x+1)+(x+2)+(x+3)+...+(x+100)=5750
x + 1 + x + 2 + x + 3 + .... + x + 100 = 5750
(x + x + x + ... + x) + (1 + 2 + 3 + ... + 100) = 5750
100x + 5050 = 5750
100x = 5750 - 5050 = 700
x = 700 : 100 = 7
Tìm x Biết: (x+1)+(x+2)+(x+3)+...+(x+100)=5750
Ta có: (x + 1) + (x + 2) +...+ (x + 100) = 5750
=> (x + x + x +...... +x) + (1 + 2 + 3 + 4 + ... + 100) = 5750
=> 100x + 5050 = 5750
=> 100x = 5750 - 5050
=> 100x = 700
=> x = 700 : 100
=> x = 7
Ta có: ( x+1) + (x+2) + (x+3) +...+ ( x+100) = 5750
<=> ( x + x + x + ...... + x ) + (1 + 2 + 3 + ..... + 100) = 5750
<=> 100x + 5050 = 5750
=> 100x = 5750 - 5050
=> 100x = 700
=> x = 700 : 100
=> x = 7
Ta có: ( x+1) + (x+2) + (x+3) +...+ ( x+100) = 5750
<=> ( x + x + x + ...... + x ) + (1 + 2 + 3 + ..... + 100) = 5750
<=> 100x + 5050 = 5750
=> 100x = 5750 - 5050
=> 100x = 700
=> x = 700 : 100
=> x = 7
Tìm x , biết: [x+1] + [x+2] + [x+3] +.........+[x+100] = 5750
[ x + 1 ] + [ x + 2 ] + [ x + 3 ] + ... + [ x + 100 ] = 5750
[ x + x + x + .... + x ] + [ 1 + 2 + 3 + ... + 100 ] = 5750
Đặt A = 1 + 2 + 3 + ... + 100 và B = x + x + x + .... + x
Dãy A có số số hạng là :
( 100 - 1 ) : 1 + 1 = 100 ( số hạng )
=> A = ( 1 + 100 ) x 100 : 2 = 5050
=> B = 100x
Ta có :
[ x + x + x + .... + x ] + [ 1 + 2 + 3 + ... + 100 ] = 5750
100 x + 5050 = 5750
100 x = 700
x = 7
TÌm x biết: (x+1)+(x+2)+(x+3)+...+(x+100)=5750
(x+1)+(x+2)+...+(x+100) = 5750
(x+x+x+.....+x) + ( 1+2+..+100) = 5750
100x + 5050 = 5750
100x = 5750 - 5050
100x = 700
x = 700 : 100
x = 7
100 . x + ( 1 + 2 + 3 + ....+ 100 )
100 . x + 100 . 101 : 2
=> 100x + 101 + 50 = 5750
100x = 5750 - 5050 = 700
=> x = 700 : 100=7
=> x = 7
(x+1)+(x+2)+(x+3)+...+(x+100)=5750
100x + ( 1 + 2 + 3 + ... + 100 ) = 5750
100x + 101 . 100 : 2 = 5750
100x + 5050 = 5750
100x = 700
x = 7