2x + \(\frac{x}{6}\) = 12
\(\frac{12x}{6}\) + \(\frac{x}{6}\)= \(\frac{72}{6}\)
12x + x = 72
13x = 72
x = \(\frac{72}{13}\)
\(\frac{12x}{6}\)+\(\frac{x}{6}\)=12 \(\frac{13x}{6}\)=12 x=12:\(\frac{13}{6}\) x=\(\frac{72}{13}\)
2x + \(\frac{x}{6}\) = 12
\(\frac{12x}{6}\) + \(\frac{x}{6}\)= \(\frac{72}{6}\)
12x + x = 72
13x = 72
x = \(\frac{72}{13}\)
\(\frac{12x}{6}\)+\(\frac{x}{6}\)=12 \(\frac{13x}{6}\)=12 x=12:\(\frac{13}{6}\) x=\(\frac{72}{13}\)
1. (X mũ3-1)(X mũ2+1)=0
2. (2X +6)(3X mũ2 -12)=0
Tìm x biết : a) -5/6-x=7/12+(-1)/3 b) 2.(x-1/3)=(1/3)^2+5/9 c) |2x-3/4|-3/8=1/8 d) 2/3x+1/6x=3 và 5/8
a , 8x + 2x = 25 . 22
b , 5x + 2x = 35
c , 5x + x = 150 : 2 + 3
d , 6x + x = 511 : 59 + 31
e , 5x + 3x = 36 : 33 . 4 + 12
-12 + ( x - 6)+ 5 = 12
|x|+(-12)=6-18
2 x X + 1/2 + 4 x X + 1/6 + 6 x X + 1/6 = 12 11/12 . tìm x
1) (2x -3) (5/2 – x)=0
2) x – 12 = ½
3) (2x + 3/5)^2 -9/25 = 0
4) 7/3 x – 5/2 x = -1/3
5) ¾ + ¼ : x = 1
6) 1/3 + 2/5 (x+1) = 1
Tìm số nguyên x biết :
a) 2x + 12 = 3( x - 7 )
b) 2x^2 -1 = 49
câu 3 tìm số tự nhiên x biết
1) (35 + x)-12=27
2) 2x - 5 =33 :32
Tìm x :
2x + x = \(\frac{11}{12}\)