c ) 71 + 260 = \(\frac{x}{x}\)+\(\frac{140}{x}\)+260
331 = 1 + \(\frac{140}{x}\)+260
331 = \(\frac{140}{x}\)+261
331 = 140 : x + 261
140 : x = 331 - 261
140 : x = 70
x = 140 : 70
x = 2
Giúp mình nhoa
Tìm x
a) \(x\) x 2015 = 2015 x 2016
b) (\(x\) x 0,25 +2013 ) x 2014 = ( 53 + 2013 ) x 2014
c) 71 + 65 x 4 = \(\frac{x+140}{x}\)+ 260
d) 583 - \(x\) = 237
e) \(x\)- 836 = 575
g) 142 x \(x\)= 3692
h) 8928 : \(x\) = 124
i) \(x\) : 34 = 168
g) 142 x \(x\) = 3692
Tìm x:
a) (X x 0,25 + 1999) x 2000 = ( 53 + 1999 ) x 2000
b) 71 + 65 x 4 = \(\dfrac{x+140}{x}\) + 260
tìm x
( x * 0,25 + 1999 ) * 2000 = ( 53 + 1999 ) * 2000
71 + 65 * 4 = \(\frac{x+140}{x}\) + 260
1 tìm x
a , ( x + 1 ) + ( x + 4 ) + ( x + 7 ) + ( x + 10) + ..........+ ( x + 28 ) = 155
b, ( x x 0,25 + 1999 ) x 2000 = ( 53 + 1999 ) x 2000
c, 71 + 65 x 4 = \(\frac{x+140}{x}\)x 260
Tìm x(x>0)
\(\frac{2015}{2014}+\frac{1}{x}=\frac{1}{x+1}+\frac{2014}{2013}\)
Tính A= 1/2 x 2/3 x 3/4 x ... x 2013/2014 x 2014/2015
tính bằng cách thuận tiện nếu có thể: ( 2013 x 2014 + 2014 x 2015 + 2015 x 2016) x ( 1 + 1/3 - 4/3)
Bài 1:tìm x:
a) x+5*2-(32+16*3*6-15)= 0
b) (x*0,25+1999)*2000= (53+1999)*2000
c)x*2016=x:2016
d) (x+2)+(x+3)+.....................+ (x+100)= 5750-(x-1)
e) x+x:1/3:2/9+x:2/7= 252
g) 71+65*4=\(\frac{x+140}{x}\) + 260
h) x:0,1: 0,2: 0,3 :0,4 : 0,5 : 0,6 = 100000
Tìm x
71 + 65 x 4 = \(\frac{x+140}{x}+260\)
