3 : x - 5 = 40
3 : x = 45
x = 3/45
x = 1/15
= 1/15
mik mới bị trừ 280 xong, các bn giúp mik nha
Cảm ơn trc
Tìm x :
3 : x - 5 = 40
3 : x = 40 + 5
3 : x = 45
x = 3 : 45
x = \(\frac{3}{45}\) = \(\frac{1}{15}\)
3 : x - 5 = 40
3 : x = 45
x = 3/45
x = 1/15
= 1/15
mik mới bị trừ 280 xong, các bn giúp mik nha
Cảm ơn trc
Tìm x :
3 : x - 5 = 40
3 : x = 40 + 5
3 : x = 45
x = 3 : 45
x = \(\frac{3}{45}\) = \(\frac{1}{15}\)
Tim x biet: x+1/1+2x+3/3+3x+5/5+...............+20x+39/9=22+4/3+6/5+................+40/39
tim x biet
(-25)-(5.x-3)=4
5.x-6=20-(12-6)
-2.x-40=(5-x)-(-15+60)
tim x :-2x-40=(5-x)-(-15+60)
tim x de 3x-40 chia het cho x+5
-2x-40=(5-x)-(-15+60)
tim x
tim x biet -2x-40=(5-x)-(-15+60)
Tim x thuoc Z: (x+1)+(x+2)+(x+3)+...+(x+40)=1000
1)a)2x-13=25+6x
b)12-x=3x+6
c)40-(25-2x)=x
d)|x-3|=5
e)|x-3|+(x+2)+(x+1)=12
2)tính
a)(-1).(-2).(-3).(-4).(-5).[(-3)-(-5)]
b)1-2+3-4+5-6+...-98+99
3)tim x
a)(x-1).(y-2)=5
b)x.(y-3)=12
Tim x
a) ( x - 78) .26 =40
b) 39 . (x-5) =39
c) 30- ( 52 - x) =90
d) (x-12) : 5 =2